With the iOS app update 2.3.26, the floor selector button has disappeared. I contacted the Roborock support and they told me that the robot should be able to position itself correctly when moved from one floor to another. Apparently the feature works for me in about 10% cases. Usually, the robot finds itself in a random room of the previous floor, starts bumping itself into "unexpected" obstacles, and (the worst part) remaps the previous floor. The support people told me that "it's a feature not a bug". Does anyone know if the issue is going to be fixed anytime soon or I should just return the product and look for better options than Roborock? Thanks!