Security threat

I use a mac lab top, as of late I've been unable to access a website that previously I visited often.  When I attempt to access the site a "web shield" from AVG pops up stating "treat secured" further stating "we've safely blocked the threat".  I've made sure to update AVG as well as add the website to the exceptions option provided through AVG.  when I uninstalled AVG the site came up fine, moreover I am able to access the site from other devices.   How can I resolve this issue?

Paul 

Hello Paul,

We will work together to sort this issue.

Have you reinstalled AVG AntiVirus on your computer?

If not, please reinstall and check if that fix the issue.

If the issue persists after reinstall, please check if this problem occur in all the web browsers or a particular web browser.

Are you trying to access this website from a saved bookmark or from search results?