Welcome back to our Community Forums! Thank you for your post, and I'm sorry to hear that your email issue is ongoing after you were able to resolve it with our colleague!
Can you tell me if you're able to access your account if you reset your password by following the "Forgotten Password" option and changing your password to something completely new that you have not used before. Once you've done this, please wait 10 minutes before trying to access your account.
Please let us know if this has worked. If not, please let me know and we'll be able to look into this further for you.