VPN Problem!!

Whenever I go to my Ipad , after updating to ios 8.1.2 VPN always asks me the password , and before this update (before ios 8.1.2 ) did not ask also do not know the password , some way to give me a new ?? Help !!

Afonso Germano .

PS : This account is not the same as it has this VPN problem.

https://forum.avast.com/index.php?board=57.0