@Kevin_Z I tried to install it on an Windows 10 administrator account and it worked. Still strange though that I couldn't install the software on a regular account... Even stranger that the software...

Hello! Despite what I entered, I'm actually using TL-PA9025P kit (not PA9020P). 25P is not available in the listing, maybe it's a region specific product? I'm just installing my 4 units and tried to...