Can't record new NBC - XFinity

Hello, I live in the Boston area and since the recent switch by NBC to channel 810 (HD) I can no longer record shows on the new channel. It says the recording schedule has been saved but nothing saves and no red dot indicator on the guide. Is this a known issue? Any solution?

This question, "Can't record new NBC," is about XFinity-Comcast TV channels, programming, and sports.

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