Can your friend email us on the internet he uses to play on? It may very well be that his IP was banned because someone was using an IP within that range that was evading a ban via VPN. If he already did email, can he try again?
I always make an effort to check my PM's once a day, so if you need anything, shoot me a PM.
PC: Ryzen 5 1600 @ 3.8GHz, GeForce GTX 1080 Ti 11GB, 8GB RAM
Console: NTSC-U PS2 SCPH-39001, Maxtor 320GB IDE HDD