How do I get a product I purchased over the Internet changed over to CPAP mode instead of APAP mode (vice versa)?

Your Z1 or Z2 should have been set to the specific pressure(s) stated on your prescription. You will need to call the provider you purchased your device from to discuss this further, as they hold your prescription. If you prefer to bring your Z1/Z2 to your local doctor or licensed therapist, we can email them the Clinicians Manual with the instructions to set your device.