During a firmware update on my router on Monday morning, the wifi configuration was corrupted  (Ethernet still works).  So I don't have wifi to any of my smart devices.  I plan to attempt to reset the router over the weekend, but for the time being I am just using all of my Kasa switches the old fashion way, by pressing the switch.  That worked fine until today, when I pressed the switch manually, and the light did not come on.  This happened on all of my HS200 light switches.  But my HS210 and HS220 switches still work. I can make the HS200s work by pressing the "Restart" button on the bottom of the switch (the right button).  

When I bought these switches, I always assumed that if something happened like TP-Link went out of business or took down the server that these light switches connect to, or quit supporting the app I could still use the switches manually.  But now I am not so certain.  Even though I found a quick solution, I am concerned that in another 2 days the light switch will stop working and I will have to restart them again. 

Has anyone run into this?  Anyone have an explanation for this?