Just a heads up for those who need support and might be hesitant to contact Aqara: I had a malfunctioning U200, and Aqara only asked me for a short video so they could take a look at the issue. Less than 24 hours later, I had a replacement unit delivered to my house (shipped by them via Amazon).
On top of that, Joyce from Customer Support was incredibly kind throughout our email exchange.
We complain a lot here about issues and wish lists, so I thought it was only fair to give them credit for this.