We appreciate your feedback. We have been actively communicating with you all the time. The machine malfunction may be caused by bumps during long transportation, which loosened some internal connectors. We replied to you immediately once you reported the issue, worked with our engineer to identify the root cause and guided you on troubleshooting. Regarding the issue you encountered, we have discussed it with our production team. In future production, we will take necessary measures to secure the internal connectors to prevent loosening during transit, and improve outer packaging. Your order comes with a 3-month free warranty. We have repeatedly informed you that you need to submit a warranty application on your Alibaba order page because seller cannot submit it. We have already prepared the replacement parts. Up to now, we haven’t received your warranty application. You may apply on your order page or contact Alibaba platform customer service for help. We are still waiting for you.