Pandaria Config.wtf how i remplace?

[Pancake21]

my client can't join in the server i think Config.wtf is broken or something

[dolcokidol]

if you think your config.wtf is broken you can safely delete it, wow will create a new one when starting up.
If you can't even log in then it's probably the realmlist and that's the file under /Data/enUS/realmlist.wtf and it should have this line at the top:
set realmlist logon.warmane.com