I have made payment earlier in October. I have used less than 10% of that amount so far, and mostly on embeddings. Few hours ago my application started giving me openai.APIStatusError: Error code: 402 about Insufficient Balance. Before that everything worked fine.
I have regenerated new API key, replaced old one. Checked if my payment method has any problems with bank, card, account or whatever. Nothing there. Checked any restrictions from billing if there are any. None.
Also I see there are many questions about this, but none seem to have ultimate correct answer, some are still unanswered.
What could be wrong here?