Whenever a website won't allow login or some other seemingly simple issue it's best to try other browsers.

Brave is my standard browser. I use Opera for Liberty Utilities, Bank of America, and anything else that hangs up. I keep the browser open all the time to remember that option is available.

I've given up trying to clear cookies and cache in Brave to resolve issues. In fact, I keep five browsers on hand for options, options, options.