Hello, Jim.
You must have installed the unlimited devices version of AVG TuneUp which does not require a license to activate it. So there won't be an option to enter a license number. Please uninstall it as per the steps in this link. Then refer to instructions in this article to download and install AVG PC TuneUp using the key.
I am in the Support avg.com/support_ask page but can not see where I have to ACTIVATE
the programme I purchased yesterday evening
I have Product Key etc., but where to active Ive no idea
Hello, Jim.
You must have installed the unlimited devices version of AVG TuneUp which does not require a license to activate it. So there won't be an option to enter a license number. Please uninstall it as per the steps in this link. Then refer to instructions in this article to download and install AVG PC TuneUp using the key.