He have acces to internet ofc its checked but when try register he have "time out" ....
wtf mine PC and www working fine but he cant register.... and other www on his smartfon working normal even youtube so wtf ?
Might post in meta if you are able to figure out what is stopping it. What country are you in and what DNS do you use? When your friend tried it on pc was it tethered through same smart phone?
Let us know more info and try to replicate it. If all else fails since your friend has you... do a teamviewer sesssion for him to sign up on your connection, or he could go over to your house and do it.