I had a Hansshow lift gate system installed last year. The instructions were terrible, it took several visits to the installer to get it to work. The foot wave feature does not work. Nor does the remote feature. The liftgate opens to a lower position--by quite a ways-than the stock unpowered system so I've banged my head a few times. The "poles" need to extend another inch or two. I complainded to the factory and they basically elected to cut off communication. I'm looking around for a better system but haven't identified it yet.
I love my QX50. I wish it had come standard with the power lift, and smaller wheels than the 19's (I'd prefer 17's and may swap them out). Anyway it is otherwise a very nice machine!
Thanks for sharing your experience. I will avoid that brand. maybe try the Autoease. I agree also about the 19 inch wheels. I was warned that the tires would not last as long, and I need replacements at 26K miles.