Having trouble with the Betfair UK login process, any tips?

I've been trying to log into my Betfair account from a new device and I keep getting an error message about my credentials. I've checked my username and password multiple times, and I'm sure they are correct. Has anyone else experienced login issues recently, or is there a specific browser or method I should be using to ensure a smooth connection? I'm worried I might be doing something wrong with the two-factor authentication setup. Any guidance on troubleshooting this would be greatly appreciated.