I'm sorry about the issue. What's the exact error or message?
What email do you use, such as Hotmail, Yahoo, Gmail, AOL, etc.?
If you use btinternet email address, are you currently able to access it at the bt.com website?
Do you have windows xp, vista, or 7, or 8, 10?
Can we do a remote support session, so I can troubleshoot the issue directly on your computer together with you?
Please reply at the box below. Thank you,