I submitted 2 runs on Glitchless but my slower time is the one on the leaderboard and my actual PB is considered obsolete. Can someone explain or fix this please?

Just stumbled on this, in case you (or anyone else reading this) still want an explanation. Your "slower" time was submitted with Ingame-Time (IGT), while your "faster" run was submitted with Realtime (RT). We generally time runs using IGT as it's more accurate and representative, so leaderboards are sorted by IGT. If your run now only provides RT but no IGT (as your "faster" run does), it will be sorted below every run which has IGT, including your "slower" run. Because of this, your "slower" run is your actual pb. If you would like to fix that yourself, either find the IGT for your "faster" run somewhere (which I assume is unlikely since that was about 2 years ago), or just delete your "slower" IGT run, which will make your "faster" run your new PB and therefore not obsolete.

That's just what i gather from your profile, somebody correct if I'm wrong about something here and have been living a lie for the last few years.