When will I receive the invitation?

I am still receiving the same issue. When I do one of the "solutions" I can receive invites for a short time but it stops receiving them shortly after.

Also, do you receive ANY invitations? I don't receive ANY invitations. Not to party chat, not to any multiplayer games. Nothing. They don't even show up in the invitation history on the social tab in the Xbox Guide. It's like they just go into a black hole.

Edit: I do receive voice chat invitations (like from the mobile app) but I think those are actually sent as Xbox text messages, which I still receive fine. Party and game invitations are completely a no-go, though.

Edit 2: Here's another recent instance of the same issue.

Edit 3: When did you notice the problem? I first noticed on Friday, February 7.

I checked and I don't have a ban. I'm sending and receiving messages just fine as well. It's been happening for a few days now. Others on the console have no problems receiving invites. Not only do I not receive invites, no one gets them when I send them
either...from my console, phone or tablet.

I have already received and invite for the preview, but I have not received a message to download the preview dashboard. It shows in my account that I just need to accept the preview invite (I was told this by xbox support when I called). The problem is
that I have not received the message to accept it. The forum for the Preview says No group found whenever I am linked to it. I just need to be sent the Xbox Live message to accept my preview invite. Any ideas can help.

If you're on PC, I would check in your Xbox app settings and make sure that you have Invites set to accepting them from everyone in your Privacy settings, and also make sure that your Game/Party Invite notifications are set to On. I turn mine off sometimes
as I get spammed with game invites to games that I don't play from friends, so just make sure the Invites are on and your game invite notifications are also on.