I'm trying to change my email address away from any google related (because they're starting to demand a phone number so they can shove those entire accounts they won't let me into anymore). So I'm expecting to abandon my last google related accounts inevitably.

So I tried to change my account here to be associated with my account at @protonmail.com (they've also started using @proton.me), though I get the following message...

The administrator has banned your email address. You will need to change your email address in order to continue.....

Is @protonmail.com / @proton.me banned for some bizarre reason? If there's some black/white list of email providers here you should display it, because I'm not going to be making accounts at "approved" providers for each site that has conflicting lists.

I'll rather just call it a day and avoid such sites. The internet is becoming a real pain in the rear these days.