I run chatgpt dot com
I get infinite “Verify you are human” loop, I click, get “Success!”, have some redirects and then again and again. It’s totally not ok that I can not use my Pro subscription 
I tried to use different browsers and cleared cache.
If I go to login page I still get: ?error=undefined URL:
We ran into an issue while signing you in, please take a break and try again soon.