API key issue with Flutterflow

Hey there, a total noob here.
I am building an app in Flutterflow. When I try using a direct OpenAI API key, it never works.

I tried troubleshooting with ChatGPT and the conclusion was that the issue is that the API key has that “proj” section.
Insted of :
sk-or-v1-f7814de6a7…
it looks like
sk-proj-c7T9P-X-d-Q9rVViCY_5YKg_obJi…

So Chat GPT told me to use OpenRouter, and it worked. Clean API key, and no issues.
That is, until I started doing something savage, and I got flagged by Azure. Apparently, OpenRouter APIs are filtered through Azure, which is very censorship-heavy.

How can I resolve this? Is there a way to get a “clean” API key from Open AI? One that is not project related?