Loft6.6
I can answer that one as well for you as well..

If you look at your receipt you will see membership 2020, that has been created with Auto renew switched on so if you join and use 2020 option (I think it has been renamed from 2019, but I might be wrong...lol) next year the forum will request the money from your bank for you.
This will work fine until you have no money left.....!! or...... the direct Debit is changed either by the owner or the club canceling it.

It will all sort itself out.

Take care