Keep Writing
A place for writers to encourage and inspire one another.
Search for old username in old instance modlog, there's probably a reason given, although it's not always that meaningful.
Shoot me your old username and I'll check it out.
Technically, deletion would need to be done by your old instance admins, although with federation, that content is also everywhere in the fediverse and might not be completed deleted.
On which instance? Turns out there's a few Spitz out there
Hmmmm, you don't seem actually banned, but .ml probably didn't skip 0.19.2 which had a bug that required to clear cookies and whatnot before logging in would work postupgrade.
Which is one of the main reasons why we hadn't upgraded yet, fixed in 0.19.3, but I'm not sure of the behavior of you don't skip 0.19.2.
Anyway, try logging into your account in a browser, in a private navigation window to be sure, I would expect it to work.