The Meta Horizon Link app LIVE channel is incompatible with the Meta XR Platform SDK v203 Unity plugin.
If you are updating a published Rift/PCVR app, we suggest you stay on Meta XR Platform SDK v201 Unity plugin.
If you still want to update your published Rift/PCVR app with the Meta XR Platform SDK v203 Unity plugin, you will need to inform your user base that they will need to switch to the Meta Horizon Link app PublicTest channel.
Switching to the Meta Horizon Link app PublicTest channel a Rift/PCVR app built with the Meta XR Platform SDK v203 will not give the Unity plugin access to the Group Presence API in the Platform SDK. This means the following will not function: Inviting other players through the in app methods, setting destinations and making them joinable, rejoining other players.