Hi SodaSam,
I think the issue may be related to your specific API key, could you confirm on your OpenAI platform if you are allowing connections from external IP's?
Additionally if you are able to add me on discord, I can guide you 1 on 1 and provide you with a tested and working API key.
My discord is "BustJetter"
I am truly sorry to hear you are still having issues, I am committed to getting you operational ASAP.