Devices don't make up,their own IP addresses...a router assigns one via DHCP. So, the device is connecting to a router with a 192.168.0.x setup, and that router is assigning the .100 address.

A solid orange light indicates no network connection. Perhaps you have a marginal wifi signal. As a test, try moving the plug and router closer together, and see if the modules are more stable. A...

It could be that your device (PC?) does not have an IP address, because there isn't a router to assign it one. If so, give it a static IP, such as 192.168.0.10. The process varies depending on OS,...

I've never seen that in any configuration! It should be one MAC to one IP (of course). If it were me, I'd pull them all out, and then delete all the router entries. Now, add them back, one at a time....

Devices,connected to a router, including the HS100, should be using one IP address. What do,you mean by "uses many IP addresses" ? Not following.

So, what's the point of having a firmware upgrade feature in the kasa app if you have to use windows?