I have my ps4PS4 set up in my living room and just bought my friends ps3friend's PS3 for my kids room so she can watch ps vuePS Vue. I tried changing the psnPSN email on the ps3PS3 but it won't let me use my psnPSN email. Can I use my panPSN account on multiple devices? If so, how do I do that? My friend didn't clear anything off the system so all her stuff is still on there, so I don't know if that could be causing the problem.