I had the same issue. It’s wordpress latest update. There are at least of dozen of plugins are and themes are not tested with the latest update.
I also been very curious why would WordPress have an empty section.
The other option you can enter manually as Admin. The Admin role can add the subscribers name and info and reset the password for them.
Hi,
I don’t there is a plugin for that. If you want to duplicate the content (A) by export as xml file and upload it to (B)(C)