Your User ID number can be found by tapping the settings icon under your coin/glowbuck totals, then select the “settings” button from the options and your ID will be displayed in white numbers along the outer edge of your screen, usually the bottom. Runaway user ID's are normally 1-7 numbers long.
If you are using an iOS device you can also see your User ID in the Settings area of your device by locating the Starlight app and looking under “authentication.”