Asana notifications not showing up in connected Teams channels

I have set up a connector from Asana to various channels in Teams. Everything appears to be working. When I go through the process in Teams, my Asana projects show up. After I finish the connection process, a message shows up in the Teams channel, noting that I have set up a connection and that group members will be notified when tasks are created, completed, or commented on in Asana. But then nothing happens. I’ve had several of these connections in place for months, during which time we have definitely created and completed tasks in the associated Asana project. But no messages show up from Teams in Asana.