User cannot access Jira Service Desk. Continually give message "Incorrect Password"

[Mike Maron]

I have added the user to our "Customer Portal" several times.  The Invitation email is delivered and the user is able to register with their "Full Name" and create a password.

However, when they exit JSD and reopen, they are prompted for a username and password.  Then they receive a message that the "Username and Password are incorrect"

Deleting the user and re-adding the user gives the same result.

[Jack Brickey]

This seems odd. Is it a single user? I might suggest reaching out to Atlassian Support.