Usenext i think is being blocked

Im not sure but i thing AVG internet security 2017 is blocking my Usenext downloads!
i can find the item i want to download i then click on download the window appears to download with Open Save or Close i click on open and very briefly a small window appears ive no idea what it is or what might be written in it! 
The mouse pointer show activity for for a long time when it is on the Home screen or over the menu bar area at the top! but nothing else happens!
ive tried looking in AVG but can not see a log or what would suggest that AVG is blocking something from Usenext

Please help

Hello Karl,

I understand your concern. Please save the file, instead of clicking on open. Once the program is saved, please double click on the saved file to open it. Check if the program opens, if the issue persists. Please disable AVG temporarily and then open the saved file.

To disable AVG temporarily, please right click on the AVG icon present at the bottom right corner of your desktop(System Tray) and you can see a scroll bar to "Disable Protection". Please click on the same to disable AVG Protection and after which check if you are able to access this application.