There is no USA phone number to call. I had 4 different incognito support chat windows open since around 8 AM (it is now 1:34 PM). I am a well seasoned cyber security guy by day and am very able to troubleshoot this printer. IMO, you should really, really think twice before a Creality purchase. Their support is negatively impactful and you might as well have a brick for a printer WHEN in malfunctions.