I advise you to roll back to the previous version. If you want to stay on this version, then connect site monitoring and statistics collection host-tracker.com For example, this tool will help you determine the problem of the poor functioning of your site.
I can not increase the screenshots to explore the essence of the problem.
If your question is still relevant, then I can help you.
I think that you have problems with hosting or incorrectly performed site migration to a new engine. I advise you to check it with a special tool host-tracker.com/InstantCheck/Create/ We will continue to build on the information received.
It is possible that someone from the moderators again opens the topic that was closed.
You can assign a moderator for each topic / branch separately.
