HELP , I can not sing up on youtube ???

every time i sing up a massage says : check your user name.


i tried all the names but it did not work ..


can you help me , please ???





thank you all .. ^_^
HELP , I can not sing up on youtube ???
Is your name Caro? If it's Caro, You can try Caro_17
Reply:check the guide lines your user name might need to be longer.