Answer 1: If you can't login and see "Invalid username and password", you may have typed the wrong account information. Try typing it again

Answer 2: For security protection, you may required to change your password. If you have trouble log in, please try to change your password at: https://market.stephero.io/account

Answer 3: Some times high traffic can cause login issues. Clear the app and login a few times could result in a success
Answer 4: You are not able to log in during server maintenance time. Login during server maintenance time will result in the "Invalid username and password" error. Follow our Announcement Channel and Communities to stay updated with any maintenance schedule
Answer 5: If your errors are not in the 3 situation above, please submit a ticket: https://help.stephero.io/support/tickets/new