How do I pay a 3Rivers loan/credit card/mortgage/line of credit? Log in and select the “Transfers” tab. Select the accounts you wish to pay from and pay to in order to initiate the payment. Have more questions? Submit a request 0 Comments Article is closed for comments. Related articles I forgot my user name. How do I retrieve it? Vacation Where do I send Mastercard credit card payments? What does the app look like in the app store? What features does the mobile banking app offer?