To register a new design in your vector software (such as Cricut Design Space, Silhouette Studio, or Adobe Illustrator), you must build a blueprint that your hardware can interpret.
The search result showing an Italian manual for the Philips HDR3800 (page 37) confirms this. The section of the manual covering "Registrazione" (registration/recording) has instructions for setting up a timer recording. This is a feature of the hardware and does not require registering with an external service. htv 371 register new
Without completing the flow, you remain a limited guest user with restricted functionality. To register a new design in your vector