You can edit your favorite biller by following the steps below:
1) Go to FAVORITES under MORE
2) Tap on PAY BILLS
3) Tap on the 3 dots on the favorite biller you want to edit
4) You can edit the Nickname or Subscriber Account Number by tapping on it
5) Once edited, tap DONE and verify the change with your MPIN
6) One MPIN is verified, your edits to your favorites will be saved