Update: My account has been re-enabled this morning. Google apologized for the delay.
To clarify some questions in the comments:
This was a personal account. I normally use my university account for research. I hadn't even used up the $200 free trial, just doing some inference.
I had multiple projects for different AI Studio purposes. Google's automated system likely flagged this as an attempt to circumvent quota limits, even though I was just organizing different use cases into separate projects.
The "2 years" wasn't me ignoring it. I followed up multiple times over this period, but every attempt went nowhere - just automated replies. Eventually I got fed up and decided to post here.
I wasn't paying for support since it was just a personal account for small experiments.
Thanks everyone. The HN visibility definitely helped.