You need to start your purchase by selecting the Gold Pack in the LEO Web shop and on the detailed product description page you will be given 3 options.
12 Month, 4 Month or 1 Month subscription
So, if you want to purchase a 12 Month Gold Pack please choose the 12 Month subscription option and finalise your purchase.
Please note, between 11/12/2017 and 01/01/2018 only 12 Month Gold Packs will be available for purchase. The 1 and 4 Month Gold Packs will be available from 02/01/2018.