i didn’t run any StarCraft 2 for about 2-3 years.
There was a known issue in 2022 which seems to be the problem on my account.
The “old” Thread got already closed.
[Main Thread] - Commander Levels Reset - Technical Support - SC2 Forums (blizzard.com)
I already created a Ticket on the Battle.net Support:
I didn’t know i have to write here in Forum, forgive me.
My bought commanders are no longer unlocked and all my Levels and Prestige are reset.
The same Problem is on my other account too.
Also on my second account the ladder placement history is not correct. In 1vs1 i was on Master league wich is no longer listed.