I have a Case #143223: Online Repair Request that has been open since October of 2019 and first sent my drone in September 2019 which was just sent back with nothing done. I have tried the Chat on the site here Aerial Drones | Yuneec USA as well as tried calling sales on the case. No one ever comes up and chat and the calls say you are first in line , attempts to go to voice mail then just hangs up. I would like my drone back or a discounted Mantis for all this nonsense. As for would be buyers I would avoid buying any Yuneec products at this time.