Printer, server and non-transitory computer-readable recording media storing computer readable instructions for printer and server

A non-transitory computer-readable recording medium storing computer readable instructions for a first printer,

• the first printer comprising:
• a display unit;
• a communication interface for communicating with a server, wherein the server is configured to store, for each of one or more printers, printer identification information for identifying the printer and service-related information for providing a service using the printer in association with each other, the service-related information being obtained by using information received from the printer;
• and
• a processor,
• wherein the first printer is configured to use both a single-purpose color material cartridge for receiving provision of the service and a general-purpose color material cartridge different from the single-purpose color material cartridge;
• wherein the computer readable instructions, when executed by the processor, cause the first printer to:
• in a case where a first predetermined operation including an operation of mounting the single-purpose color material cartridge to the first printer is accepted in a state where second printer identification information for identifying a second printer and specific service-related information are stored in association with each other in the server, cause the display unit to display a notification screen that prompts a second predetermined operation, the second printer being different from the first printer, and the second predetermined operation being for changing a printer used for the service from the second printer to the first printer;
• and
• in a case where the second predetermined operation is accepted after the notification screen has been displayed, send a printer changing request including first printer identification information for identifying the first printer to the server via the communication interface, the printer changing request being for causing the server to store the first printer identification information included in the printer changing request, instead of the second printer identification information, in association with the specific service-related information.