Seems that same or similar issue on my installation.
Version 13.0.7
After correct uploading 30 (35,6MB) from 157 files to a group folder I get the message that not enough memory is available in my account.
But this account has unlimited memory, also enough memory on storage.
I think that Quota is wrong calculated/used.
EDIT:
My workaround was to change the quota of the profile several times and do restarts…