“PRINT SETTINGS” (in the Polar Cloud, specified under “OBJECTS”, the object in question, “3D PRINT”) has a couple of settings that may affect the printing of the first layer and therefore its adhesion properties. See in particular the “ADVANCED” setting of “Speed”, “Initial Layer Speed”, the “ADVANCED” setting of “Quality”, “Initial Layer Thickness”, and the “ADVANCED” setting of “Nozzle”, “First Layer Extrusion Width”.