Hello, when you said you could not login, what exactly was the behavior? Did it give you any error message? If so, can you please share what it says? Have you tried logging in on a different device in the same network? Does it work on a different device?
I would like to know, if you launch your browser in private mode or in incognito mode, does it let you login?
Please provide as much information as you can. So far from what you provided is not enough to narrow down. Thank you.