Unfortunately couldnt make Hi P2P Client working, but at least the laptop is usable now: it took several seconds switching between tabs or copying text under mouse when it was running on windoze. Laptop is very low end specs (4Gb ram and some i3 cpu)
Done for my grandmother and at least three customers for my small (small) business. No one has had any complaints or questions. Just make the on screen text and icons kinda big, get them a Firefox icon on the desktop, make sure they can print and call it a day.