Activating license

Hello Ian,
Thank you for contacting us here and we regret to hear you are experiencing issues with activation of your AVG. We request you to download the latest installation file for AVG Internet Security and run the installation setup using the new license number.
Please click on this link http://files-download.avg.com/inst/mp/AVG_Internet_Security_742.exe to download the installation file.
Run the downloaded file to start the installation process.
Follow the instructions on your screen.
When prompted, enter your AVG license number. The license number is sent automatically to your e-mail once purchased.
Complete the installation and restart your computer.
Please, feel free to let us know if you require any further assistance. Thank you.

Hi, after entering my license number, it states 'license valid', but when you activate it it comes up as 'license not valid', what have I done wrong ?

Hello Ian,
Thank you for contacting us here and we regret to hear you are experiencing issues with activation of your AVG. We request you to download the latest installation file for AVG Internet Security and run the installation setup using the new license number.
Please click on this link http://files-download.avg.com/inst/mp/AVG_Internet_Security_742.exe to download the installation file.
Run the downloaded file to start the installation process.
Follow the instructions on your screen.
When prompted, enter your AVG license number. The license number is sent automatically to your e-mail once purchased.
Complete the installation and restart your computer.
Please, feel free to let us know if you require any further assistance. Thank you.