Thanks for these beneficial tips. I agree 100% with everything you have said about securing the router and leaving it turned on.
We don’t turn off the router at night; the router can schedule times where the WiFi radio itself is turned off, any device connected via Ethernet still has access to the internet. We do this more to prevent people from using the internet in our house at night when they should be sleeping and not because of security. You are right about making sure the router is properly secured with a password though; this is very important when it comes to securing a wireless network and should always be done. I also agree with leaving the router turned on at night, for us all of our essential computer systems are connected via Ethernet and perform any updates in the middle of the night.
I still firmly believe that the sync module should be able to recover from an internet outage without having to be manually restarted. I was able to work directly with one of the firmware engineers at Blink to get this issue resolved. It required Blink to push a new firmware version to our module, but ever since the firmware update, we have not had any problems with the module coming back online in the morning when the router turned its WiFi radio back on (or when we have encountered the occasional internet outage).