Sounds like but in fact every update my License (or the info that I use the premium version) gets lost!
I have to install an older Version (updraftplus.2.25.6) and after it – everything is okay again.
(S)FTP connection works and Premium functions (migration) are shown!
The connection to Team Updraft account is alive again.
BUT AFTER NEXT UPDATE > UpdraftPlus: You have selected storage options which are not part of your version of UpdraftPlus. To backup to SFTP / SCP, please upgrade to UpdraftPlus Premium… etc.