Hello,
This usually points to cart/session sync issues on mobile, often related to caching, AJAX, or how the mini-cart vs full cart is rendered.
1. If you are using any cache plugin, clear the cache of the plugins and disable them for a while, and check back the behavior again after clearing the mobile browser cache or check on any other mobile device.
2. “To troubleshoot the issue, please temporarily deactivate all third-party plugins on your site and then check the site’s behavior again. If the issue is resolved, reactivate the plugins one by one and test the site each time to identify which plugin is causing the problem. Once the conflicting plugin is identified, you may contact that plugin’s support team for further assistance.”
3. Try to check once by activating the default WooCommerce theme, such as “Storefront,” to check whether the issue is because of our theme or not.
Best Regards,