Hi @RichardPinewood 
Welcome 
to the community!
I am not a dev on OpenAI, but your question is interesting.
If I am not wrong I remember, Huawei devices released after the U.S. ban, including the P40 Lite, lack access to Google’s proprietary services like Google Play and Google Mobile Services (GMS). This means that apps requiring Google frameworks can run into problems, which might be why ChatGPT doesn’t launch correctly on your phone. Even though Gspace helps emulate Google services to some degree, it’s not perfect and doesn’t always provide full compatibility.
Also, there are some unsupported countries for ChatGPT or API. If you use VPN by connecting unsupported countries, Idk. Please read the FAQ questions.
If you use from unsupported country may result in your account being blocked or suspended.
I hope it is not the reason and can be solved your problem.