Unable to successfully finish my updates

I took your advice, unfortunately, I have now uninstalled my already paid for subscription which expires in April of 2016.  Now how can I get that one reinstalled?  I still have the Product Key!  I do not think I should have done what you told me.  Is there any way to just get to a screen on your AVG page where I can just re input my product Key?

I have a notification when I click on my AVG ICON of Update for my Computer and Update for Web. Then problem is that those updates get 70% done and then I get the banner that says "Update failed, Update has detected running installation.  Complete that installation before sarting update."  Can someone please help me get my updates successfully?  I am running Windows 10 and have had no problems until now.

V/r
Mike Wallace

Michael, For which AVG product does your Product Key apply?. Have a look @ this article (http://avgclick.me/downloadAVG).
AVG Guru

I took your advice, unfortunately, I have now uninstalled my already paid for subscription which expires in April of 2016.  Now how can I get that one reinstalled?  I still have the Product Key!  I do not think I should have done what you told me.  Is there any way to just get to a screen on your AVG page where I can just re input my product Key?