Refused License Key

I have a inserted a multi app key into my account and download the following avg apps and all managed to work except the VPN. I have got an error which said "Sorry, AVG Secure VPN server refused your license file"

Hi Moustafa,

We will help you with AVG Secure VPN.
As it isn't advisable to post subscription details here, we have sent an email with further details. Please check your inbox/spam for the email.