Gemini quota error while still having free credits available ?

Hi,

So i've been getting that quota error 429 today, using either 3.0 preview or 2.5 pro.

I dont get it as i still have a little under 200$ of credits from the 300$ trial and still due for over 20 days to use them.

Did they change something regarding daily usage of those credits ? What am i missing here ?

Thanks if anyone has the answer.