This happened to me today on a client web site.
I understand that the Premium Wordfence Customer can open tickets, but creating an htaccess file on each folder and subfolder of the website (Denying access to all py, php…) on a WordPress Site is like killing the site, and it does not seem to be trivial. It would be nice to understand how it was solved and if it some bug or vulnerability of the plugin. I think you should provide a solution for all customers when something like this happens.