The app name is misleading

The app doesnt change "WiFi Priority", it just disables the auto join. So if I have two networks available and I want one to have priority over the other, it disables the second. However, if the first isnt available, it now will not auto join that network. It accomplished what I need for now, but since I travel between two offices, I will have to manually join the second network every time I’m at the other office, which is what I was trying to avoid.

McZune about WiFi Priority