"My customer is using the correct login information, but gets an error and can't login: 'Unfortunately the information you entered is not correct. Please re-enter your information and try again.'"
Perhaps they are actually using an incorrect password. Try resetting their password. See Sites > Site Users. If this is a B2B storefront, make sure the User is Approved. See Sites > Site Users. The "User Account is Approved" box must be checked.
Trouble logging in? Simply enter your email address OR username in order to reset your password.
For faster and more reliable delivery, add support@aleyant.com to your trusted senders list in your email software.