Removal of box on screen

I am brand new to AVG

Over the last weekend I have downloaded  AVG Driver updater for Windows and  AVG Internet Security (Multi Device)  and  AVG PC Tune Up

When I woke up this morning there was a box on my screen  carrying the title Hacking Attempts Blocked  and no matter how I try I cannot get rid of it have tried the X in the top right had corner and I have tried the close option given in the box  It simply will not go  Has anyone got any ideas please
PLEASE NOTE  I am not very technically mined and I am an elderly man of 72 so if anyone is able to help please give your instructions with every single move  Thank you so much

Hello Terence,

We apologize for the inconvenience.
May I know in which AVG product you are facing this issue?
We will send an email asking for a few details and please reply to that email.
Thank you.

Hello Terence,

We apologize for the inconvenience.
May I know in which AVG product you are facing this issue?
We will send an email asking for a few details and please reply to that email.
Thank you.