Apple Music / family sharing

my Fiancé is currently sharing his Apple Music subscription via family sharing with me and his brother and it has worked perfectly for almost two years now however this morning I went to open my Apple Music app and noticed all of my music was gone except for what I had previously purchased and when i asked if maybe he had canceled his subscription he said no that his was working fine and none of his music was gone. I’ve tried resetting my phone, signing out and then signing back in to my Apple ID, I left our family sharing group and then rejoined hoping that would fix it but it didn’t. Has anyone else experienced this and if so how did you fix it???