How do I cancel my AIPRM Premium for ChatGPT extension subscription?

The window in Chat GPT will not let me login to my account so I can cancel my AIPRM Premium for ChatGPT extension subscription. Far worse, I can’t even contact somebody to help me do this via phone or email! This is just terrible! Please help and thank you.

I want to apologize for the trouble you’ve experienced. We already responded to your concern through our support portal. Please check your email, and continue the conversation there for a faster resolution.

Hi I have same issue.
how to cancel my subscripton with airprm?

Please visit the billing portal to manage your AIPRM subscription: