Yes I have, and already got to the part in Sylvia's route where she's helping as a maid etc. Meanwhile Maria is stuck at Level 30 with a '!' but nothing activates to get it to 31.
I am also running into this issue. I have all main and side girls stories completed except Maria who is stuck at 30. I did forget to buy the bartender outfit for a long time. Not sure if that is what causes it, but just a thought.
