Looks like the usual signal quality issues they need to track down. Wide variance in signal strengths, and looks like it is thunking to find an alternate channel for at least one of them. A couple others might trip the process as well under more adverse conditions (summer time, higher temps and dramatic shifts in usage patterns always present challenges).
In that admin section (where you got access to the logs), there will be options for rebooting and resetting it to factory defaults. Can try the reboot button there to see if it can prod it into locking the core 16 DS channels again... but it will likely eventually do the same thing as signal quality degrades again.
It is better to use that method for the reboot because it will potentially retain most of the log, depending on how much difficulty it has latching service on the reboot. It is more of a "soft" reboot, so it just appends the existing log with the resynching entries. It is full you will likely only loose the oldest 5 or 6 entries unless it is really struggling. Pulling power for a "hard" reset will pretty much overwrite the log with a lot of entries with dates from 1970 because of the cold boot process. Resetting to manufacturer defaults is a full wipe of config and log and such... essentially refreshes the modem config completely from the head end.
Sometimes resetting to factory can make a difference though. Sometimes leads to bonding a different primary channel that improves stability. Not an absolute thing... but can be something worth trying if you find you need to reboot daily or multiple times a day. Just keep in mind you will want at least 6 hours with no forced reboots (ideally 24 hours) before a technician shows up.
Something you may want to look for concerning your coax through the house is how the cables are actually run. No hard twists or sharp turns of the cable. Anything sharper then a turn you would see around something about the size of a 2 liter bottle may compromise integrity of an RG6 cable (hopefully it is RG6 and NOT RG59) which can knacker up some frequencies in the spectrum. It is important that the structure remains within certain limits to keep resistance at 75 ohms between the conductors across the run of the cable... bend it too much and you muck things up in this regard, and an already challenged channel becomes too unstable.
Also check for signs of stress in the insulation, and all connectors are slightly more than finger tight. Not torqued up, just a touch more than finger tight. Unscrew them, make sure the copper is "shiny" and no water in there, etc. and screw them back on. Another potential issue on the resistance front... if they look bad, the tech may need to put new ends on there.
