Allow national lottery site to know my location

I need to allow the national lottery site to access my location as it no longer thinks that I am in the UK, the AVG VPN is set as London, UK

Hello Laurence,

We're sorry for the inconvenience cuased.
Regrettably, certain websites have taken counter measures to block their users from accessing their content through Secure VPN servers.
While we do continue to add new servers and ip addresses, they are quite fast to identify the same.
However, we request you to enable Mimic protocol in your AVG Secure VPN by following the below steps:
Open AVG Secure VPN > Click on Menu > Settings > Protocols > Select Mimic.
Once you've performed the above steps, check if you can access the lottery website.
Thank you for your understanding in advance!

Thank you for writing us back, Laurence.
We are sorry to know that. We'll check and help you.
We've sent you an email with further details. Please check your inbox/spam folders to find the email and use it to get back to us.
Thank you and keep us updated.

Hello,
I have followed the instructions and it still thinks that I am outside the UK so unable to log in, please can you help me further?
Thanks