This is a description of the issue from my client (I've had this issue myself when I've tried to log in):
"Followed the link you sent, and added my credentials. It then forwarded me to the Welcome Back Screen, and I also got an email asking me to confirm. Clicking the confirmation link in the confirmation email sent me again to a localhost page (see screenshot). And trying to login on the welcome screen with the email and password I entered previously says "invalid email or password. please try again.” (see Screenshot)."
Can anyone help me troubleshoot?