Like many other I am a client who bought TS licence many years ago.
In october I have received a new email as I have to pay a new licence ,..., why not

So I have bought a new licence (Standard) with an Update & Support subcription free until 12/26/2018.
But I do not understand what there is with this subscription that will cost 10$ per month.
Or more simply, what will happen after 12/26/2018 ? My licence will be blocked ? I could not access to dukascopy value ?
I will to have pay again a new licence ? Or subscribe 10$ per month ?
I am lost . And more over that I am using today the very last release (1.9.2.3) , the subcription is active , and I am receiving error 503 when I want to download DukasCopy data:(
Please could you clarify ?