There is a way to change the sensitivity level, but I have only just figured out how to implement it in SmartThings and need to rework the code of the SmartThings device handler I created. Are you using that device handler (DTH), which is part of the bspranger/Xiaomi GitHub repository?
The newest version of my DTH is v0.92b, which I announced here. There’s more information about the DTH in the v0.9b release announcement here.
The current version of the DTH displays a tile with the sensitivity level that is changed when pressed, but it’s not yet implemented. Basically, what needs to happen is a correctly formatted message to change the sensitivity level is sent to the Vibration Sensor, and then the user must short-press the reset button for the level change request to complete. Finally the Vibration Sensor sends a confirmation message. I am working on new code to handle all of that in a graceful way.
If you are using my DTH or any others in the bspranger/Xiaomi collection, then it would be better to post in this thread.
If you’re not using my DTH, then what are you using? I could direct you to the right thread to ask.