DNS Hijacking - recent email received from AVG News

Hello Ren,
We regret the inconvenience caused. Please let us know your registered email address or Order ID of your AVG purchase to provide your AVG account information and the product you use in your pc. DNS error occur when your internet server is down. we suggest to check with your Internet Service Provider for better assistance in solving the DNS issue.
Thank you.

I received an email from AVG news 3 days ago, and recently I have been clicking on regular websites, but more often get an error site - DNS cannot be reached?   Or something like that.
I clicked on the link in your email to check how I can repair this and I got a

404 - File or directory not found.


I have purchased I don't know what from you guys and don't seem to get much joy out of this product. 
my Internet sercurity is 'protected'
PC Tuneup remains at 10%
Provpn not  installed
Web Tuneup - open

Please advise what products I have purchased from you and where I can take my laptop to have this all sorted out.

Ren Holmes




Hello Ren,
We regret the inconvenience caused. Please let us know your registered email address or Order ID of your AVG purchase to provide your AVG account information and the product you use in your pc. DNS error occur when your internet server is down. we suggest to check with your Internet Service Provider for better assistance in solving the DNS issue.
Thank you.