Comcast statement:

It was an Xfinity issue, primarily. Fans with FIOS or YouTube TV or whatever else were fine, though I did get an email from someone up in Mercer County (Trenton area), and he said he couldn’t get it on FIOS, but was able to switch over to MSG and accessed the game that way.

Anyway, there’s your explanation. A “technical issue.” Go Flyers.

EDIT – got a message from a reader, he complained to a live agent via the chat and they gave him a $20 credit to his account