I enter address, after a few seconds the map marker moves back to default

When I am entering a new location, I add the address and the map marker moves to the right spot on the map. Then after a few seconds, the map marker moves, the zip code is deleted, the lat long is reset to the center of the default city, and (often – not always) an error message comes up (repeatedly – can’t escape it): “Please choose any address of the (Colorado) region only.” Also, sometimes before I save it (probably on autosave), inline red error messages will appear saying “Address information is required” or something like that.