This is a general browser error that has been known to be fixed by the following:

1. Try logging in on an incognito/private tab. 
2. Trying it out on another browser also works to the same degree. 2.
3. Make sure that your browser is up to date. 3. 
4. Emptying cache and clearing cookies.

If nothing works, kindly create a ticket and reach out to our support team. They will help and escalate this issue so you can get back to playing!