Can't allow people to join FaceTime call with link
Using the new FaceTime link feature in iOS 15 to invite people using a link, the host can't allow them to join the call.
I invited a few people to a FaceTime call using the new link feature in iOS 15. At the agreed time, they joined from the link and were prompted in their browser to enter their name.
As the host, in the call, I can see in the pop-up menu "X person(s) waiting>". After tapping that, I see a list of their names, each followed by "🔗 wants to join".
Tapping on these has no effect and I cannot find a way to let them in.
Meanwhile, they are seeing "Waiting to be let in... [spinning wheel]" at the top of their browser window.
Furthermore, under the list of names of those waiting, I see ⨁Add People. It is greyed out and tapping it has no effect.
How can I allow people to join?