Yeedi Vac 2 Pro Robot Vacuum

I bought 3 yeedi total the first one worked so well I quickly ordered another upgraded model for myself and one as a gift, unfortunately that was a terrible mistake they both quit working due to a malfunctioning sensor. They would stop cleaning and an error “please clean the anti drop sensor “ would appear and no matter what you did to try and clear the issue it continued. The one I bought for my friend was not being used. Due mostly because she lives in another state and she didn’t know how to set up the schedule cleanings, so for months it really didn’t do anything. She is married with one small dog , so when I visited, I set The cleaning schedules for her . Believe me when I tell you, it was like brand new and it was not being overworked, but after four months after me setting the schedule for her, she got the same error message about the drop sensor and because it was over a year after I bought it all they kept saying was you can buy another one . After having two Stop working due to the same issue , I have absolutely NO desire to ever own another one . I’m curious because after searching the Internet on how to fix it ,I found it is a serious problem and they know about it , they chose not to order a recall or even offer a way to fix it , their go to was to fall back on it has been over a year when they can clearly see through the app that it was not being used And only lasted four months after it started getting used. I also sent them pictures and videos and you can clearly see it looks brand new. I just can not buy from a company that does not stand by their products.