I've subscribed Creator Studio but can't open Final Cut Pro at all

I've subscribed Creator Studio but can't open Final Cut Pro at all. Of course I've download the correct Final Cut Studio Creator Studio version. When I click get Creator Studio it says already subscribed, when I click Already Subscribed it says No subscription

Steps I've tried

Uninstall and reinstalled Final Cut Pro

Log out - restart - log in

Log out - restart - create new appleid - restart - log out - restart - log in with old applid

Uninstall and reinstall Final Cut Pro with every steps