I had forgot my password and attempted to log in too many times and now my account was blocked. I was able to find the right password after digging. I was still getting the same message saying my account is blocked because of too many login attempts. This was extremely frustrating for me.
After a long research, I found a guy explaining the issue and my account was fixed today evening. Hope it will work for all of you guys as well.
Here it is: ChatGPT: Your account has been blocked after multiple consecutive login attempts | Fix Login Error - YouTube
Another way, If you make sure your email and password that is correct, You could try to change your IP network.