Hello JCcents.
Thank you for your feedback. We are sorry to hear about the frustration with the registration process, and we understand how that can take away from the initial experience. The GPW1805 is a current model, and it should be available for registration, so it is possible the issue is related to a temporary website glitch or how the model number is being entered. As a quick workaround, try entering the model number without spaces (GPW1805), clearing your browser cache, or using a different browser or device, as this can often resolve form or loading issues.
If the model still does not appear, you can skip registration for now and keep your proof of purchase, as that is typically sufficient for warranty support if needed. Once you are ready to use the unit, we recommend checking all hose and gun connections, ensuring a steady water supply, and purging air from the system before starting to help ensure smooth operation. If you continue to have trouble registering or have questions once you begin using the unit, please reach out to customer support directly, either using the online chat function, on Greenworks Tools page, or by calling 1-888-909-6757 we are here to help and want to make sure both the product and your overall experience meet expectations.