I have the following problem: I deleted the plugin a few months ago. After reinstalling, I found that all of the old changes are still active.
I have deactivated and deleted all old data and the plugin. I also cleaned up the database.
The second new installation is now on the basic setting and without the old data.
The problem that the pages preinstalled by the plugin are not active.
I am assuming that there are old entries in the database that I do not know and cannot delete.
It is also interesting that the plugin works perfectly on my second domain.