Relaying apparatus communicating with information processing terminal, image processing apparatus, and service-providing apparatus

A system comprising a relaying apparatus, an information processing terminal, and a plurality of image processing apparatuses,

• wherein the relaying apparatus comprises:
• a first communication interface configured to communicate with the information processing terminal, the plurality of image processing apparatuses, and a service-providing apparatus configured to provide a service available for a user of each of the plurality of image processing apparatuses;
• a storage storing a plurality of sets of first device information respectively identifying the plurality of image processing apparatuses, and second device information assigned to a first set of first device information from among the plurality of sets of first device information, the first set of first device information identifying one image processing apparatus from among the plurality of image processing apparatuses;
• and
• a first controller configured to:
• communicate with the one image processing apparatus via the first communication interface so as to transmit and receive first service use information, the first service use information being for using the service provided by the service-providing apparatus;
• communicate with the service-providing apparatus so as to transmit and receive second service use information via the first communication interface, the second service use information including the second device information stored in the storage in association with the first set of first device information;
• receive replacement request information from the information processing terminal via the first communication interface, the replacement request information including old first device information and new first device information, the old first device information indicating the one image processing apparatus, the new first device information indicating another image processing apparatus other than the one image processing apparatus;
• and
• replace the first set of first device information so that the first set of first device information identifies the another image processing apparatus indicated by the new first device information instead of the one image processing apparatus indicated by the old first device information,
• wherein the one image processing apparatus comprises:
• an image processor configured to process an image;
• a second communication interface configured to communicate with the relaying apparatus;
• and
• a second controller configured to communicate with the relaying apparatus via the second communication interface to transmit and receive the first service use information,
• wherein the information processing terminal comprises:
• a third communication interface configured to communicate with the relaying apparatus;
• a third controller configured to transmit the replacement request information to the relaying apparatus via the third communication interface.