I'm on an older iMac with a clean install of Catalina. I'm an Apple Music subscriber and, for the first two days Apple Music worked just fine, but now I've been logged out and can't get past the 'Try it free' splash screen. If I try to sign in (under 'Account/Sign in') I can enter my login and password just fine, but absolutely nothing happens. The beta web player works just fine, as do my iOS devices, but the Mac app is useless. I've tried a few things, restarting, checking network settings (nothing else has issues) but nothing is working. Any ideas?