Are you able to login to mydmacc? If so make sure you are using the right pin which can be found under the web inf system (found on the main page) -> personal information -> view pin. If your pin is abc123 you will have to change it on the change pin option as it wont work on the app till you do. The login username will be your DMACC ID number and the password will be your pin. If you are still experiencing issue after exhausting these option let us know.