How do I set my PS5 as my primary device?
You can activate the following consoles on your account:
You can have a PS5® console and a PS4 console both activated without deactivating one of them.
Can a PS5 have a PS4 as primary?
You'll just get kicked off of the acct logs on on another one. Yes. Each acct gets one “primary” console and can login to any other one as well. The benefit of the primary console is that any account on the console can play all the titles purchased by the primary acct.
How do I deactivate my PS5 as primary PS5?
How many PS5 can be activated on one account?