Does xfinity X1 router support multicast broadcasts?

I have a skybell that won't communicate notifications (video is fine, just no notifications) with my alarm panel because it requires the wifi router to support multicast broadcasts.

I've troubleshooted this for days & the this is the last item that it could possibly be! Yes, the skybell & the panel are both on the same 2.4 network.

Any help would be greatly appreciated.