Party Chat Speech and Accepting Game Invites Not working. HELP!

I'm playing a game on the Xbox app on pc and Xbox game bar isn't functioning properly. I cannot SPEAK in party chat even though I've done all of the troubleshooting and permissions. I also cannot accept game invites for some reason. When I try to accept a game invite for pc AND crossplay it just tells me that I need to download another app in order to accept game invites.

:)