You can ask Microsoft or OpenAI. Explain why your startup didn’t start up in a year. Perhaps you can apply again, or apply to research grant programs if you are in ML computer science, but you got in at a time before a quarter billion people had heard of ChatGPT.
Sufficient to say they do expire, and likely nobody on the forum can offer any advice of how they managed to get more free use.
I contacted OpenAi support and they extended the credits for me until February! I tried contacting Microsoft support but they don’t control the credits (even though it was through their startup thing), so contact OpenAi support and pray.
Can you please tell me how did you contact them? An email address perhaps? We are in the exact same issue, just one year later, our credits expire on Nov 1 also and we still have lots of credits left…