You receive them from your IPTV service provider upon subscribing. Amazon.com

Users must enter the provider's host URL, username, and password into the app . These credentials for input into the OPPLEXTV app are obtained from an IPTV service provider . Download - OPPLEXTV APK for Android

You receive them from your IPTV service provider upon subscribing. Amazon.com Download - OPPLEXTV APK for Android