Block client for the Internet need Help

Hello, can someone please help me or tell me how to easily block my PS5 from the internet. ??

It should still be able to be found in the home network (Ps Remote) but it just doesn't connect to the Internet.

Unfortunately, when I press Block under Clients in the Flint 2 interface, everything is blocked.

I don't know Luci well

THX

If the block mistake device, can the GL WEB UI and login via others local devices?

If you enable the GoodCloud feature, bind the account and enable the remote WEB, you can login the GoodCloud and find your router to remote configure.

If no luck, only reset the router, long press the reset button more than 8s.