I would recommend;
1: Be sure that your keyboard language is set to English
2: If you have numbers in your password, don't use the num-pad if you have one, instead use the numbers above your letters. The system seems to be allergic to the num-pad lol
3: Sometimes logging in from a different browser or through your phone can do the trick
4: If you are using a VPN, disabling it could do the trick since our system has a VPN blocker
If all else fails, you can try resetting your password. It's not guaranteed to work, but it has helped a number of people