Hi there! This is a known issue and Bungie is currently investigating. [quote]• PSN fireteam invites are not working -- Due to Sony Platform changes required to support PS5 & PS4 cross-gen play, the Bungie site and Companion app fireteam invite feature stopped working. We will continue to collaborate with Sony, but for now please use your friend list and other PlayStation features to join players.[/quote] [url=https://www.bungie.net/en/Forums/Post/258390273?sort=0&page=0]Source: Companion App Known Issues List[/url]