Shadowban or invisible quota on gemini 3.1 pro at ai ultra account

Ok, this is interesting.

I have GOOGLE AI ULTRA account , on the ANTIGRAVITY models tab, i have full limits. Couldn’t use gemini 3.1 pro for a while, and I was using opus 4.6. Thought maybe gemini 3.1 pro on AG is going on somehow upgrade etc, since recent ups and downs. anyway, I tried to use it today, to my surprise the error continued.

It just not answers, keep loading keep generating etc.. SO I updated the software but then i had an error issuing which is 500 internal error.

I have logged in with my other account which has GOOGLE AI ONE PRO, and it works on Gemini 3.1 pro.

Trajectory ID: 3eca2f74-cc6b-4d70-b3c1-…
Error: HTTP 500 Internal Server Error
Sherlog:
TraceID: 0xa9f9aa01742…
Headers: {“Alt-Svc”:[“h3=“:443”; ma=2592000,h3-29=“:443”; ma=2592000”],“Content-Length”:[“109”],“Content-Type”:[“text/event-stream”],“

{
“error”: {
“code”: 500,
“message”: “Internal error encountered.”,
“status”: “INTERNAL”
}
}

i mean come on. you can’t expect us to believe there is no invisible quota or shadowban.

I need urgent help.