I just noticed if I link into Apple Music via a shared music link I cannot sign in. When I share a song in a forum I test the link to make sure it works. I have discovered that the link works OK but I am not signed into Apple Music opening it this way. No big deal I can sign in except I can't I enter my Apple ID pass code and nothing happens, no log on. This is not big deal I have the Mac app lurking in the Doc bar. I thought maybe it was a browser thing, but in Safari it does the same thing. When I open a link for the first time in exhorts me to subscribe to Apple Music. I thought about signing in like a new account I assume it would tell me I already had an account, not going to see if this is what happens.