A server includes memory, a connection establisher, a first transmission request receiver, a first determiner, a first screen data transmitter, a second screen data transmitter, and a first disconnector. The connection establisher establishes continuous connection with a communication device. The first transmission request receiver receives a first transmission request t for displaying a setting screen corresponding to a first type of service. In response to the first transmission request being received from the external device, the first determiner determine whether a second type of service is currently provided. The first screen data transmitter transmits first screen data for displaying a first setting screen to the external device in response to the first determiner determining that the second type of service is not currently provided. The first disconnector disconnects the continuous connection in response to selection of a disconnection button included in the first setting screen displayed on the external device.