My apology if this issue was previously raised and answered.
Our Moodle 2.8 installation is using the SAML authentication plugin to get authentication. The authentication is working perfect in browser but when it comes to mobile app, it simply generates the error message.
Moodle version 2.8
Moodle Mobile App version 2.2
Mobile Platform iOS 9
SSO using the SimpleSAML-PHP Library (ADFS)
Error Message: The username was not found in the database.
Any help to fix this issue is highly appreciated.