Help! 18Kpv suddenly went offline

Today I unplugged the dongle, reconfigured it to work on my DSL line instead of my Xfinity line, and now it is working again.  I am not sure if it was the act of unplugging it or the change of Internet providers that kick-started it...and I am not about to investigate since it is working for now...maybe next time.  Thank goodness...I was getting withdrawal symptoms due to not being able to monitor my system whenever I wanted!  

In any case, I will repeat that this inverter really should have a hard-wired Ethernet jack (in addition to the dongle.)

Thanks! I did not know that device existed.  I may look into this the next time my system goes out to lunch.  Of course, running a cable to the inverter in the garage would be a real pain.

I do not see any reported outages. I would recommend testing different channel numbers on your router's 2.4GHz band. Local interference on the current channel might be causing connection drops until the auto-detect feature switches to a more stable channel.

Many places ae getting very crowded on the 2.4GHz airspace.  Literally everything uses this frequency from smart appliances to security cameras and cell phones.  You can download a WiFi analyzer app for android and look at what strength of signals are in different locations to troubleshoot this issue.  I have had other devices flake out randomly due to the crowded 2.4 airspace and moving a router antenna might be all you need to do to fix this.