AoM: Cannot Invite Friend

After the latest patch, I cannot invite my brother or vice versa. He’s on Steam, I’m on XBOX PC. We’ve not had any trouble prior to this. He bought the latest expansion pass at the same time as the hot fix, we’ve both repaired files, cross-play is enabled as always.

We can play when hosting a public lobby in multiplayer, but we cannot add each other as friends (we had one minor success when removing and re-adding each other, but now we can’t even see any clan/friend invites either) or invite to gauntlet/arena etc. Everything else seems to be working fine, this almost seems like an office “printer spooling” where the social actions aren’t getting all the way through for some reason. Anyone else experiencing this or have suggestions?