Since the update 1.21.82 I have this issue. No connection to the marketplace and realms and I can’t change my skin. I made a restart of my PS5, cleared the cache from market place and from my addons and texture packs, reinstalled Minecraft. I have the newest system software version for the PS5. I also checked my router. I have connection to the internet, because I'm connected to my Microsoft account. I unlinked the PSN account with the Microsoft account and relinked, but nothing works. Only in Minecraft it happens.
I'm online with my Microsoft account, but the connection to the marketplace, online gaming in realms or to use my skin is not possible. I tried everything, nothing fixed this issue.
The hotfix update 1.21.92 doesn't fix the problem.
This issue is being tracked at MCPE-221668.