After ID software delisted some Doom and Quake games. Master Levels disabled from my library

I am using GZDoom as engine and ZDL as launcher. I have a legal copy of Master Levels for Doom 2 (since it was available in Steam) When I load a Master Level wad, I am given this error: OS: Windows 10 (NT 10.0) Build 19045 GZDoom version g4.14.0 W_Init: Init WADfiles. adding C:/Games/GZDoom/gzdoom.pk3, 689 lumps adding C:/Games/GZDoom/game_support.pk3, 3308 lumps adding C:/Games/GZDoom/wads/master/ATTACK.WAD, 11 lumps adding C:/Games/GZDoom/game_widescreen_gfx.pk3, 214 lumps Execution could n...

When I go to the store page, it acts as if I had never owned the game. I don't have access to it at all. What's going on here?

:)

I have it installed but it won't let me play it. I payed money for this when it was still on sale. Why remove the ability to play it on its own? Bethesda please do something right for once!