Product categories display incorrectly

Hello,
site: https://casaecolori.it/
I’m facing an issue with product category archives.

Issue description
I have a parent category:
Vernici & Smalti
with the following subcategories:
Stucci e Collanti
Pitture per Interni
Pitture per Esterni
Pitture Decorative
Smalti
Vernici per Ferro

All subcategories:
contain products, have correct parent–child hierarchy, have category thumbnails, show correct product count in WooCommerce admin.
However:
only one subcategory (“Pitture per Interni”) displays products correctly all other subcategories load as empty pages (no products shown)

Example URLs

Working subcategory:
https://casaecolori.it/product-category/vernici/pitture-per-interni/

Not working subcategories (examples):
https://casaecolori.it/product-category/vernici/stucchi-e-collanti/
https://casaecolori.it/product-category/vernici/pitture-per-esterni/
https://casaecolori.it/product-category/vernici/pitture-decorative/
https://casaecolori.it/product-category/vernici/smalti/
https://casaecolori.it/product-category/vernici/vernice-per-ferro/

All categories:
display type set to Default
correct parent category
thumbnail image assigned

Catalog Mode is disabled
Cache cleared (plugin + browser)
Products are assigned directly to subcategories

Request
Could you please solve my problems:
You can disable the plugin or plugins that might be preventing categories and subcategories from displaying correctly. However, I think the reason is different.
Thank you in advance for your support.

Hello,

I have checked your subcategory pages, and the products are showing fine.

See Screenshot for clarification: https://ibb.co/vCSKZwqG

Please clear your site cache, browser cache, and check the site in incognito mode / another browser to confirm if the issue persists.

Best Regards,

Yes, thank you. I disabled the plugins—the display is working now. Thank you!

Some product subcategories have started to display correctly, however several categories are still not loading properly.

Current behavior:
For some product categories/subcategories, the page loads with header and menu, but the content area is completely blank (no products, no layout).
Other categories work correctly.

The issue is inconsistent and affects only certain category URLs.
https://casaecolori.it/product-category/vernice-per-legno/impregnante-per-legno/
https://casaecolori.it/product-category/vernice-per-legno/smalto-allacqua-per-legno/
https://casaecolori.it/product-category/vernice-per-legno/vervice-per-legno-esterno/
https://casaecolori.it/product-category/vernice-per-legno/vervice-per-legno-interno/
https://casaecolori.it/product-category/vernice-per-legno/accessori-vernice-per-legno/

I am attaching the affected links for your review.

What has already been done:
Cache and optimization plugins were tested and cleared.
WP Rocket is currently disabled.
The issue persists even without cache.
Homepage works correctly – but lowly (very ,owly).

Some categories work, others do not.

Please advise:
What could be causing only certain product category pages to display blank content?
Is this related to WoodMart product archive templates, category settings, or theme configuration?
What exact steps should I take to resolve this issue?

You may disable any plugins you consider necessary for debugging purposes — this is not a problem for me.

I would really appreciate your help in resolving this issue.

Thank you in advance.

Hello,

Please confirm the permission for plugin deactivation and switching to the parent/default theme for testing.
Looking forward to collaborating with you!

Best Regards,

Of course, I give you permission to do everything. Thank you very much.

Additionally, could you please run diagnostics on the homepage loading performance? It’s taking about 30 seconds to load, which is unusual. The only changes made were image replacements and conversion to WEBP format. Google PageSpeed Insights fails to complete the speed test for the homepage and returns an error.

Hello,

Your issue has been resolved. Check back your site and check the issue.

See Screenshot for clarification: https://ibb.co/4Z2kZrrZ

Best Regards,

Yes, thank you. The categories are now displaying correctly.

However, a few more issues have appeared.

First, the homepage is still loading very poorly.
Second, the GT-Translate plugin at the top of the homepage is not working.
Third, Google sign-up / registration is not working.
And the payment methods are not working and are not active.
I kindly ask for your assistance in resolving these issues as well. Thank you very much.

Hello,

Regarding the GTranslate and payment options, Please Navigate to Plugins and activate the relevant plugins, then it will work on your site.

For the home page speed, our theme is optimized for speed and should not significantly slow down your website. However, it’s possible that your website’s performance is affected by the content you have added. For instance, the use of too many plugins, large unoptimized images, or other resources can slow down your website.

We recommend that you remove any unnecessary plugins and install a JS & CSS optimization plugin such as WP Rocket. Our guide on how to optimize your website using our themes can be found here: https://xtemos.com/wordpress-performance-optimization-the-ultimate-guide-in-2021/

Best Regards,

Excellent, thank you. Please advise which plugins you recommend deleting entirely.

contact-form-7

creame-whatsapp-me

elementor

embed-optimizer

google-listings-and-ads

google-site-kit

gtranslate

image-optimization

jetpack

js_composer

kadence-woocommerce-email-designer

klarna-checkout-for-woocommerce

klarna-payments-for-woocommerce

loco-translate

mailchimp-for-woocommerce

mailchimp-for-wp

optimization-detective

performance-lab

pixelyoursite.off

regenerate-thumbnails

revslider

safe-svg

speculation-rules

updraftplus

w3-total-cache

webp-uploads

woocommerce

woocommerce-payments

woocommerce-paypal-payments

woo-custom-product-addons

woodmart-core

woo-extra-product-options

woo-update-manager

wordpress-seo

wp-file-manager

wp-mail-smtp

wp-optimize

wp-rocket

wp-super-cache

I would like to keep only the ones you recommend.

Hello,

You currently have many plugins doing the same job, which slows the site. Please keep only the essential ones: WooCommerce, Woodmart Core, your page builder (Elementor or WPBakery – only one), WP Rocket, your active payment gateway(s), SEO plugin, and WP Mail SMTP. You can safely remove extra cache plugins, unused payment gateways, duplicate optimization/image tools, and any plugins not connected to active features.

Best Regards,

Thanks! I’ll go ahead and clean everything up right now. And one more thing: this page is showing up blank again, while the others are currently displaying correctly: https://casaecolori.it/product-category/microcemento/primer-microcemento/

Hello,

I have checked your site, and the page is showing fine.

See Screenshot for clarification: https://ibb.co/TBxVLtBR

Check back your site and check the issue after completely clearing the browser cache.

Best Regards,

Good day, thank you. I have now noticed an issue on the category pages, for example: https://casaecolori.it/product-category/vernici/ (please see the attached photo). The subcategories in the circular areas are not displaying correctly. Could you please fix this issue?
Regarding the homepage: I further compressed all the images yesterday. Now, they are between 200-300 KB each. While the loading speed has improved, it is still quite low. Could you please check what else might be slowing down the page?

Attachments:

You must be logged in to view attached files.

I have deactivated and deleted all previous caching plugins. I have now installed WP Rocket. If you would be so kind, could you help me configure it properly for optimal performance? I would be very grateful, and I am more than willing to pay for your time and expertise if necessary. Thank you.

Hello,

01. To make them clean and aligned, the images should have uniform dimensions and similar aspect ratios. When images have different sizes or proportions, the grid becomes uneven.

Please upload the images to the same size and the grid will display correctly.

02. After conducting a speed test on your website via PageSpeed, I recommend that you review the below suggestions:

Render blocking requests: enable this https://take.ms/BuPV8 option in Theme settings to make it better.

-LCP request discovery: Make the images lighter.

-Network dependency tree: replace the fonts from Google to the local https://take.ms/o9CcC
https://xtemos.com/docs-topic/how-to-upload-custom-fonts/

Reduce unused JavaScript – Use the WP Rocket to fix that, navigate to WP Rocket -> Settings -> File optimization -> enable Minify JavaScript files.

Minimize main-thread work – I suggest using the Wp Rocket to fix it, more details are here: https://wp-rocket.me/google-core-web-vitals-wordpress/minimize-main-thread-work/

LCP(Largest Contentful Pain) message doesn’t mean that this particular element is loaded slowly. It just indicates which element is the Larger Contentful Paint.

Read more here https://developer.chrome.com/docs/lighthouse/performance/lighthouse-largest-contentful-paint/?utm_source=lighthouse&utm_medium=lr

Reduce unused JavaScript – Use the WP Rocket to fix that, navigate to WP Rocket -> Settings -> File optimization -> enable Minify JavaScript files: https://prnt.sc/gRnGNFDeaCCN and additionally these options: https://prnt.sc/fCMisMjViraZ

-Reduce JavaScript execution time – the WP Rocket can help with it, check this: https://wp-rocket.me/google-core-web-vitals-wordpress/reduce-javascript-execution-time/

Best Regards,

Thank You!
I have now noticed an issue on the category pages, for example: https://casaecolori.it/product-category/vernici/ (please see the attached photo). The subcategories in the circular areas are not displaying correctly. Could you please fix this issue?
Regarding the homepage: I further compressed all the images yesterday. Now, they are between 200-300 KB each. While the loading speed has improved, it is still quite low. Could you please check what else might be slowing down the page?

Attachments:

You must be logged in to view attached files.

Hello,

To make the category images the proper size, the images should have uniform dimensions and similar aspect ratios. When images have different sizes or proportions, the grid becomes uneven.

Please upload the images to the same size and the grid will display correctly.

Best Regards,

[Author]

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