Bought 1 year subscription to AVG and it has stopped after less than 1 month

Dear sir/ms

I purchased AVG "Tune up" through an advert on 23/12 2019. Just over a week later when I open the program it says that my "free trial has expired " !!!  What the F is going on ?  I have the rcord on my credit card of £18.00 being paid to DRI*AVG Technologies. What should I do next ?

Hi Brian.
Please note that activation of an AVG product using the activation code is mandatory after purchasing. It looks like you did not complete the activation.
I have sent an email containing instructions to activate AVG TuneUp and also included your activation code. Check your inbox and spam box as well.