Have you tried by chance logging in through the website to see if you are able to get through on there?
Try this link here, hopefully it works out for you. If you are able to login through the website try using those same credentials in the game. If you continue having issues please reach out to our support team so they can look into this for you. You can submit a support ticket by clicking here.
I've also edited the title of this thread to match the format used in this sub forum.