If you have saved accounts from previous payments you can delete these if you follow the instructions below.
Step 1 - Choose Settings
Step 2 - Go to Payments and choose View accounts
Step 3 - Choose Remove on the account you want to be deleted for future payments
Step 4 - Confirm that the account should be removed by clicking on Remove account and identify yourself with Mobile BankID
If you want to make a new payment you can follow these instructions.