(I tried to clear cookies and many methods, in total I sat for 6 hours staring at one point and then I had an epiphany) Guys, I found out how to solve this problem and the error is incredibly stupid and unnoticeable, the thing is that when you log in to your account, you are asked to confirm that you are not a robot and a captcha is set, this is the main problem! The thing is that the captcha is sent twice and one of the authorization windows is also duplicated, so you log in twice at once! That is why I personally had this error!! (It’s just brutal, I’m repeating myself for 6 hours), I solved it simply by the fact that when I passed the captcha once, I started reloading the page and was able to enter the gpt chat. Try it for sure, I don’t understand how and why, but it worked for me! Write back whether it worked or not, something tells me that this is not a bug but a feature))