AVG driver updater

Hi. I've just renewed the license for my AVG driver ipdater software and it advised there was a new version of the software available. I tried to download this but got the following message"The subject is not trusted for the specified action"
I have no clue as to what this means, or why it has happened but need some help as I can't get the update until this is resolved.
Please help.
Thanks.

Hello John,
Let's have a look at it together. Please uninstall already installed AVG Driver Updater from Control Panel -> Programs and features -> Uninstall. Reinstall AVG Driver Updater as suggested here: https://support.avg.com/SupportArticleView?urlname=Download-Install-and-Activate-AVG-Driver-Updater and check if that helps.

Hello John,
Let's have a look at it together. Please uninstall already installed AVG Driver Updater from Control Panel -> Programs and features -> Uninstall. Reinstall AVG Driver Updater as suggested here: https://support.avg.com/SupportArticleView?urlname=Download-Install-and-Activate-AVG-Driver-Updater and check if that helps.