The issue seems to fix temporarily when I sign out of Microsoft, reboot the game, and sign back in, but not a whole lot still seems to work. Customization is still locked up as before, character 3 still won't load (though now it at least lets me try to reload, though it ends out being futile), I can't view my pocket edition purchases, and I can't buy new things. And, the issue comes back a couple minutes later, locking me back out of the marketplace altogether once again with the same blank error code.
Same with me on ps4, but with me I don't get Wi-Fi issues, it just tells me it failed to connect, then spits a blank error code, along with shutting me out of most other customization options. I can't even see my own packs I downloaded beforehand, or use any customizations for my characters.