I found that maybe the theme has some problem with new php versions. In fact, if I upgrade to version 8.1 the site stops working regardless of your plugin. Is it possible that your plugin no longer works because I’m still using php 7.4?
There are no translation plugins. The only translations are made with Loco Translate. I deactivated it but nothing has changed.
I’m Italian and for this reason you see the backend in Italian