In Boendeappen, you have the option to either pay an invoice directly within the app or copy the payment details to pay outside the app. You need to have a swedish BankID to be able to pay thought the app.
To pay the invoice in the app: Go to the Payment functionality in boendeappen and click on Handle for the relevant invoice. Then, choose when the invoice should be paid: as soon as possible, on a selected date, or on the due date. After that, complete the payment process.