Split from this thread.
We have the same problem - the admin suddenly went to 2GB - rest of organisation at 1TB storage
However the powershell command (Set-SPOSite) did not work to solve the problem. All attempts reported "This site has exceeded its maximum storage...." and did not change the quote. -StorageQuotaReset did not work either.
Any idea or suggestions ? This only happened recently - everything was fine before... So actually there is currently more than 2GB in the admin account because there was no quota problem before.
It seems Microsoft changed something at a low level which is affecting the quota on admin accounts
any help most appreciated thanks heaps