You should be fine, especially if you look the same. I'm sketched out because I have grown a beard since my photo. I'm brining two forms of ID to the test center, and am going to have a razor in my car just in case lol.
I'm on Windows 10. I don't have another device, but I have tried other networks and have had the same problem. I didn't even have Flash installed so I must have been using the regular video player.