how do you renew HP Wolf Security

[JCAM2]

why is it almost impossible to renew HP Wolf Security after the first year expires?

[rgtr]

HP's Sales team did NOT know the answer when I rang them to ask . . . and to try an purchase a renewal.
However, I managed to buy a license from "Ebuyer.com"
You need to create an account. Then you buy Wolf Security . . . one year or three years. I bought one year . . .
Several emails from Ebuyer - and finally an email from guess who - HP - HPInc_software@hp.com with a licence key. Having charged me as follows:
Cost £21.65
Shipping £4.16
VAT £5.16
Total £30.97

How does sending an email cost £4.16 ?

What is NOT clear is when my 365 days start and thus when they end ? Purchased on 3rd November 2023 ???

I would hope that the 365 days start when my initial subscription which came with the pc when I bought it last December and "commissioned" it which involves a lot of time evading Microsoft's determined efforts to make me sign up.
Any ideas on this . . .
A persistent 76 year old