I have both a free ChatGPT account and a GPT-4 Plus account. I usually use ChatGPT with or without logging in, but now it’s asking me to upgrade. I tried to find the login page for GPT-4 Plus but couldn’t locate it. I’ve already paid $20/month, and it keeps redirecting me to the ChatGPT login page, prompting me to upgrade. I’ve logged into GPT-4 Plus before. Can someone provide a direct URL to access the GPT-4 Plus login? I think Chatgpt itself should have been smart enough to handle this situation.
Hi @the_shirley 
Welcome 
to the community!
When you click on Login button it creates “client_id”, “device_id”, “country_code” “code_challenge” in the link, so, someone cannot provide you a direct URL to access the ChatGPT Plus to login:
Sample link - closed IDs with ^ symbol
https://auth.openai.com/authorize?client_id=^^^^^^^^^^&scope=openid%20email%20profile%20offline_access%20model.request%20model.read%20organization.read%20organization.write&response_type=code&redirect_uri=https%3A%2F%2Fchatgpt.com%2Fapi%2Fauth%2Fcallback%2Flogin-web&audience=https%3A%2F%2Fapi.openai.com%2Fv1&device_id=^^^^^^^^^^&prompt=login&screen_hint=login&ext-oai-did=^^^^^^^^^^&flow=control&country_code=^^&state=^^^^^^^^^^&code_challenge=^^^^^^^^^^&code_challenge_method=S256
You may try to clean your browser history, cookies and caches, and try again to login.
Also you can try it opening a “New Incognito Window” / “New private window”
Thanks!
I tired not to clear cache/history because they are useful when I want go back to those websites. ChatGPT should have come up a better way to resolve this issue. Many other paid websites did not have this problem.