I am very lost with the usernames at the start of Case 2, I've tried the hints and everything. This is what I got (ROT-13):
Znegva Yneffra = cynlvatJvguZlUrneg
Qnivq Xngnevn = fnz_fybj_qbja
Znggurj Pebpxre = ybbcerivy92
Qnvfl Ireqr = whfgnterraterzyva
Avxxv Lh = zrerzrer