Seems to be good to be true

I tested on 2 sites same template, different WP versions and hangs; the web page looks empty. I tested on a new web site just like the client needs the installation and the Search hero appears above the header, and inside the page but inside the page is freezed, the results appears above the header but on click product the web page freezes.
The import works well on the 3 tested sites but ne button add to cart never appear, just appear read more; so I can’t validate if the add to cart will be linked with de affiliate ID.
last night when visiting the site for a purchase the site were out of line, where impossible to reach the site online, now is active again but I got affraid to buy to find more issues. ?? I was expecting to finish 3 installs.