Ok, Problem solved. I went into the App and removed the HS-200 switch device and then reinstalled it as if it were a new device. I was able to remotely control the switch thereafter. I suggest to...

When I first installed the switch in Dec 2018, all went well and I could control the HS200 switch remotely. In the Kasa App, under the switch settings, there was the option for remote control (toggle...