Welcome Phil!
This app is not developed by Kasa, but by Athom. I don’t know whether Kasa is involved, but I don’t think so. However, Athom is currently in the process of getting the manufacturers themselves to develop the apps. It may therefore make sense to make an request here.
But did you already know that there are two apps for Kasa devices?
This is the link to the Community Kasa app topic:
[APP][Pro] TP-Link Smart Devices KASA - central topic
The advantage of the Kasa Community app is that the devices are integrated locally, not via Cloud. In addition, @Sharkys, the programmer of the app, is very helpful. Please don’t forget to appreciate this…