One user, a developer named Sarah, was particularly active in the community. She began creating tutorials on how to install and use the IPA files, as well as sharing her own experiences with the archive. Her enthusiasm was contagious, and soon, others began to contribute their own content and expertise.
If you use a "signing service" (not AltStore) to install your YouTube IPA, Apple can revoke the enterprise certificate used to sign it. When that happens, the app crashes on launch, and you lose your downloaded videos and playlists permanently. Youtube Ipa Archive