Keep the comparison fair
Note your device, player version, connection type and the time of the issue. Check whether the symptom affects one authorised source or several. Do not compare different source resolutions as if they were the same test.
Avoid guesswork about restrictions
If availability changes with location, ask support to clarify the permitted use rather than trying to bypass a restriction. Report the exact message and relevant regional context, keeping credentials and personal network details out of public posts.
A comparison you can explain afterwards
Record A: device, player version, authorised item, connection type and symptom. For B, change just one permitted setting or connection while keeping the other details the same. Stop A before starting B to respect the one-connection limit. An improvement suggests a useful next question; it does not prove the underlying cause.