I tried to sign up for the pro but the system is not letting me sign in
Please note that AIPRM and OpenAI are separate entities. ChatGPT is operated by OpenAI Inc. while AIPRM is operated by AIPRM, Corp.
If you are referring to AIPRM Pro, please send us screenshots or a screen recording of what you see on your end for further clarification of the problem. You may send them at our main support channel, hello@aiprm.com.
On the other hand, if you wish to subscribe to ChatGPT Pro, it is best to contact the OpenAI Support Team directly:
https://help.openai.com/en/articles/6614161-how-can-i-contact-support