AVG AntiVirus Install

Hello Patrick,
We apologize for the inconvenience.
To assist you better, could you please confirm if you have issue in installing AVG Antivirus for Mac?
Thank you.

Hello Patrick,
To fix the issue, we suggest you restarting your computer once and then do a fresh download of the installation files and proceed further. If the issue persists, please let us know the version of your Mac OS. Thank you.

I download the .dmg file and it opens just fine. However, when I double click to begin install, the Verifying "Install AVG AntiVirus" window pops up and never goes away…it never verifies and it never installs. What is going on?

The text editor wouldn't let me insert a pic in this message, so I've included a link to the screenshot:
https://www.dropbox.com/s/td80ircsij6co82/AVG%20Screen.jpg?dl=0

Hello Patrick,
We apologize for the inconvenience.
To assist you better, could you please confirm if you have issue in installing AVG Antivirus for Mac?
Thank you.

Hello Patrick,
Thank you for the screenshot. Please check if you have set the installation to allow from third party source in your Mac computer and try the installation using this link http://download.avg.com/filedir/inst/avg_avc_mac_all_2015_4816.dmg
Thank you.

Hello Patrick,
To fix the issue, we suggest you restarting your computer once and then do a fresh download of the installation files and proceed further. If the issue persists, please let us know the version of your Mac OS. Thank you.