Hello! Just to confirm I have two more cases with that issue. It was solved by changing the Language to the same as OS as previously commented.
I've lost so much time: removeing user from Adobe Admin console, recreating, adding proper license; nothing. Then uninstalling Adobe twice, completely, still nothing...
Thanks for the support in the community, this has been of great help.
This is a quite a big/strange bug indeed... Adobe needs to fix this
Kind regards!