Reply To: The coupon code on the checkout page cannot be used;

Thanks.

But on my side, the home page, blog page, and blog article page on the mobile phone seem to be loading all the time, causing the Menu to fail to open. and the slider function of products or articles on the home page does not work.

But if the category pages, product pages, checkout pages, pages, these pages are loaded fast and the menu can be opened normal.

Very strange. I have cleared my mobile browser cache and server cache many times and this is still the case.

Can you try clearing the cache of your mobile browser and open it again?
At the same time, can you check if there are any errors in the browser console?
Regards