PIA has upgraded all their servers so almost no servers work on the PIA version on the Dlite+ anymore. I don't see a way to update the APK on the Dlite+ box. I know there were some threads commenting to go into settings inside of PIA and enable the new servers but that's not even an option in the version we have.
I am using the Dlite+ box because its easier to use for others in my family since you can't accidentally exit the IPTV app.
I have the same problem on windows 7.