Section 3.1 discusses logging into and logging off the Polar Cloud; if you do not yet have a Polar Cloud account, see in particular Section 3.1.1 (or Section 1.1: Connecting the Polar3D printer to the Polar Cloud via WiFi of the Polar3D Printer Guide, step 9).
You may change your Polar Cloud account settings and customize your profile; see Section 3.2. Other Polar Cloud members who look you up may see the information you choose to provide here.
Your Polar Cloud account conveniently provides a view of your recent Polar Cloud activity, including what objects you currently have queued for printing, and lists of objects you have printed or liked; see Section 3.3.