Problems updating modules/pages

I have a few problems with updating or adding new modules on my site.

I have a video of one problem (2023-08-21 11-21-48.mp4 - Google Drive).

I want to change the content of my Advanced Tabs module. The plugin does not update my edits. It also happens when I try to update saved modules of rows. After adding a module and editing it for my likings, it just dissapears of revert to the standard content.

Website video:

My JQuery version is 3.7.1. I found on this site that it could be related to this.

Everything is up to date. I have no idea what could be the issue.