@johav What is wrong with this Dr. Jo? Makes sense... your name and your company name... perfect.
Do you mean changing to openscicomm.access2perspectives.org?
Or, jo.openscicomm.com?
Clearly it will be too lengthy to do https://openscicomm.int.cpn.edu.rs!
This here says you changing your username is basically making a new account, then directing the old username to the new one/new instance.
At any rate, if you are doing this on Cloudron, it's really a simple thing to just start over with the domain name you want. Just be sure that the root domain is one you control because the root needs to have a domain on Cloudron for Mastodon to work (check out the "Federation" section at https://docs.cloudron.io/apps/mastodon/).
