An image processing system includes a chat application service, a server, and image processing apparatuses. The server comprises a memory storing instructions; and a processor that executes the instructions, the instructions causing the server to perform operations comprising: storing user information and information of an image processing apparatus, and providing a chat bot function for supporting an operation by a user, wherein the supporting of the operation includes, in a case where an image processing request is accepted via a chat screen of the chat application service, processing to specify an image processing apparatus which can be used by a user who made the image processing request from the plurality of image processing apparatuses, and to present information of the specified image processing apparatus via the chat screen.