Any invitations to new rooms, or to host new rooms that you're not currently a member of can be found in the activity area of Airtime.
To manage your room and host invites:
- Tap in the upper right corner of your device to view any missed activity.
- If you were invited to a new room or were invited to host a room, you'll see those invites here. Tap "Accept" to welcome the invitation, or "Ignore" to decline it.