Please follow the below steps:-

1. Login to BOS with your user credentials.
2. Tap menu (located on the top right side)
3. Tap settings.
4. Tap store.
5. Scroll to see the Gateway option. Select the Gateway option.
   
   
6. To update the gateway, click on the action button and select the edit option.
   
   
7. It will open the record in edit mode.
   
   
8. Change the details you want to update.
9. Click on the Save button.