It is always best practice to put the IP address in static mode for payment terminals. To do this press the back arrow on the top left of the screen to get back to the Settings menu. From here select > "Reseau" and enter the ADMIN PASSWORD (1234), followed by the green O. Select the method of connection you are using, and toggle off "DHCP", enter in the preferred static IP, and click the checkmark at the bottom right of the screen to confirm.