1. In order to backdate a player registration, go to your Competitions Portal and select 'Pending Actions'. Players requiring approval will be shown in the list as 'Pending League'
2. Click into the player and click on 'Approve'
3. Either type the date that you want the registration backdated from, or select it using the calendar icon. Then click 'Confirm Registration.
This will show on the player's registration as the date that you have set.