Uneeded Renewal as I've already upgraded.. Taking up the higher offer, but can't cancel the lower!

I cannot cancel a previous financial agreement (which has now expired). I am quite happy with continuing with my association as a client of AVG, To be honest the amount involved is not large, so it is not an issue of trying to "screw" AVG for whom I have some affection.  To AVG, all I can say, that my details (edited) are as follows:

Original order number: xxxxxxxx
Original order date: 14 August 2019
Subscription expires: 19 February 2020
Billing amount: 109,99 €

Please clarify as to what I owe…