App locks up, locks my machine up, will not allow me to edit things such as device name or home, provides no instructions. Frequently does not respond when I click on device to turn it on. Trying to set up a schedule or scene was hell. I have 3 diffusers by 2 different makers - same problem for all. Because this app is so poor (updating it made no difference) I will be writing bad reviews on Amazon - simply because Sierra Modern Home & Asakuki chose to use your app for their products.