AVG is blocking my Shopify store for no reason

I have a print on demand Shopify store that AVG blocks on devices for no reason. It says it contains malvertising, however this is deffinately not true as ther is no advertising on the website. I have requested a review a few times and nothing happens, no one reviews it or gets back to me. This is hindering my business as I have many customers commenting on my adverts that the website is blocked. Please advise how I proceed to have this reviewed and then block removed.