It doesn't use XMPP or Matrix. It's just an open source centralized Discord clone.
The one that banned you from !onehundredninetysix@lemmy.blahaj.zone was Ada. So I am assuming the instance wide ban was also performed by Ada. You should contact Ada through her Matrix: @ada:chat.blahaj.zone, your PMs via Lemmy will not go through.
Tutanota is from Germany, though?
You. Not worth writing about.
:(
Try posteo. They at least allow third party clients and they have some cool features.
sup
Run a small periodic program in the background that will search for users with that name pattern using the Lemmy Search API and block them.
That "verification" is just to see if the account really belongs to the scammer lmao.
What's your lemmy config?
Yeah no. I've seen your bullshit scam before.
Your post will most likely be removed for rule 3, btw. Consider posting in one of these communities in the future for support questions:
Here's also a guide for Lemmy (it assumes you're using the Lemmy UI by the devs): https://fedecan.ca/en/guide/lemmy/overview
Your instance, lemdro.id, uses the Photon frontend. So you need to press "Create" on the top right and select "Community" instead of "Post".
Their reasoning seems to be because of potential privacy issues: https://posteo.de/en/site/faq