If you want to generate a new token or a new key for your payment page, you can do so by clicking on Payment Pages and Payment Page List to view a list of your available payment pages.
Next, select the payment page that you want to create a New Token or a New Key for by clicking on the page.
Generate a New Token
The option to Generate New Token is available under the Actions button in the top right-hand corner of your screen.Select Generate New Token and click Yes to confirm.A confirmation message will appear confirming that the action has been completed.
The new token will be displayed on the center screen under Token.
Generate a New Key
Once you have selected the Payment Page you want to generate a new key for, click on Field Settings from the Payment Page Menu. 
Next, click on the Actions button in the top right-hand corner of your screen and select Generate New Key.
Select Yes to perform the action, the Secret Hash Key field will now display the new information.