2 cable boxes, status unavailable

I have 5 cable boxes on account.  In Xfinity app, 3 of the boxes show 'connected'.  However, the other 2 show 'status unavailable'.  That has been the case for last 3 months or so.  TV works more or less on these "cable box to TV" connections. 

Don't know if these 'status unavailable' messages might be impacting intermittent tv issues:

a) screen lag (>30 secs during 6 am - 10 pm day, early morning operates normally) on requesting 'TV guide' or

b) blank TV screen (but comes back in 3-4 minutes).

Specifics:

X1 service and boxes, 5 cable boxes, [[one dvr box]].

Please advise if posting in right forum.