Hi Stefano
Thanks a lot for the fast response.
Yes, I have already tried to deactivate and reactivate the plugin. Unfortunately, it didn’t solve the problem.
I made an upgrade from a previous version.
Out of your answer I guess, that the MySQL permission problem shown on the newsletter plugin status page is related to my problem. I will ask my hoster to check the permission for the database. After that I’ll retry to reactivate the plugin.
I’ll let you know if that fixed the issue.
Thanks!
Jan