An error occurred during verification

[AMF]

hola tengo el problema de error de autentificacion. no se que hacer.

https://www.pes6.es/como-jugar.php

I just happened to know the solution to this problem which is not a problem basically

you are creating an account on the forum not on the main site, that's why it brings up that error
your account on the forum is different from the account on the main site 

forum: PES6.es Forum
main site (which you need its password to login into the game) : PES6.es online server for PES 6
In the game:  username-password (your main site password not the forum's)

good luck