An image forming device may be configured to repeatedly send an inquiry request to a server at a first interval and, in a case where a job execution response is received from the server, control the image forming engine to start image forming. The image forming device may be configured to in the case where the job execution response is received from the server, repeatedly send the inquiry request to the server at a second interval which is shorter than the first interval. In a case where the server receives a job stop instruction from the terminal device, the server sends a job stop response to the image forming device in response to the inquiring request received from the image forming device. In a case where the job stop response is received, the image forming is stopped.