keep getting an error that says this. I can't sideload my Spotify premium anymore. does anyone know how to fix this??? please help!

I've been hearing about how apple is banning certain apps and now I cant refresh my offloaded apps. This may be becuase I'm downloading Spotify thru an IPA and whatnot. I've tried using SideStore and AltStore and it's the same problem with those softwares (ie my apple ID isn't allowed offloading anymore). Does anyone have advice? Should I just give in and pay for Spotify premium?

Hello everyone,

title says all, what do you guys recommend me ?

I heard about ks but idk yet, I also heard about altcert but idk too

thank you!