It's free until March 31st, 20:00 PDT. https://store.playstation.com/en-us/product/UP9000-CUSA01047_00-RATCHETPS4000000
It keeps saying "oops something went wrong, please try again later" when i press the add to library button.
I have no idea for solving your problem, so I can only give you suggestions. Have you tried logging in to your Playstation account before adding it to your library? Or going to the PS store on your console to look for Ratchet and Clank?
I registered and verify it. Then tried to claim it. It keeps saying the same thing. I think they prevented new account from getting the freebies..
You might have to contact someone at PSN store or something. This game is the first part of 4 months(I think) for the "Play at Home" event by Sony. https://blog.playstation.com/2021/0...tation-games-and-entertainment-begin-march-1/
I think you just need a PSN account to redeem the game. Then, you can play it whenever you get a Sony console.