iTunes doesn't work: "for you", "browse" and "radio" go blank
iMac late 2007.
MacOs El Capitan 10.11.6
iTunes 12.8.2.3
Apple Music Subscription
One week ago, suddenly, iTunes "for you" "browse" "radio" went blank (Library and Store work).
I tried:
1) unlog/log in again (iTunes account)
2) unlog/log in again (user account)
3) reset iMac (unplug, disconnect peripherials, etc)
4) reset iTunes cache
5) look for a solution in web forums (Apple Community included): issue spread, but no solution!
6) call Customer Service: they didn't support me (old device... yeah, I know, but the Apple Music subscription is current...) - just said to wait: in some cases this issue fixes without any intervention!!!!
My Apple Music account works perfectly on other devices (other iMac, iPhone).
Any suggestion?
Note: I DON'T WANT TO REINSTALL THE OS FOR A STUPID ISSUE LIKE THIS!!!
iMac, OS X 10.11