Problems with upgrade WP 5.8

Hey there, since the last update I’m having serious trouble with the widgets.

In the sidebars, somehow old widgets turned up and all widgets I set to appear in different languages don’t show on the website anymore. They are all set to multilingual right now, but apparently this feature doesn’t exist in the new WP version any longer.

Concerning the old widgets which popped up mysteriously: I can’t delete them, as the system won’t allow me to update the page. A lot of error messages is being generated and the changes won’t be saved.

At the moment, I don’t see any other solution to delete the plugin and lose all widgets alltogether, which would be a small desaster as I’m using ca. 30 different sidebars.

Will the plugin be updated and adapted to the new WP version?

Would be great to get some answers here 🙂

Thanks a lot!