Promokit Helpdesk Alysum

Hi. Please, find below some issues I got (v.5.3.7 - PS v.1.7.5.1):
1 - Language selector doesn’t work when in page “Blog” or in a post (AMP version it’s ok): “404 Error”

2 - Top bar has different font sizes; (desktop and tablet version) compare top left and top right (”Currency” and “My Cart”): the right side is bigger. The same happens if I exchange widgets. Also when resizing in smaller screen the top right widget move lower (Done with header builder)
3 - Filters are not shown properly in desktop and AMP versions https://www.paolin.net/en/18-all-jewels : click on the little square next to “(no filter)[]” and you see the filters.
4 - In AMP version, Home page widgets that link to products and blog don’t work, I mean blog “Read more” button of Blog widget shows “500 Server Error” (from the menu it’s all ok) and the same happens with products.
5 - In AMP version, “Add to cart” button in the “Selected” widget is cut; I tried with more margin and padding with the page builder but nothing happened.
6 - I created a page with the page builder (”Collections” https://www.paolin.net/en/content/20-collections ), but I can’t see it in the AMP version; so I inserted an image in the default page content editor of Prestashop and I can see it: is this the right and the only way to build a new page visible in AMP?
Thank you. Regards,
Alessandro