My Website is being blocked by AVG

This is the Alert one of my clients received

Hi,
My website is being blocked by AVG.
Im hosted by GoDaddy they tell me everything is fine but some of my clients get an error when they try to log onto my site.
Attached you will hopefully see an image of the error.
Any help anyone can offer would be much appreciated.
Kind regards,
Katrina

AVG Alert

Thank you for sharing the screenshot, Katrina.
Are you facing this issue in any particular website or on all the browsers?
Did you try to submit the false positive request to our AVG developers team and check?
In order to analyze the website, we request you to submit the URL for analysis through this https://www.avg.com/false-positive-file-form website. 

If it is confirmed as safe, it will be whitelisted and the virus definitions database will be released through update.
You will also get the status updated via email. 
Thank you and keep us informed.

This is the Alert one of my clients received