Hello, I have the same problem with my King-Q4_EEW curtain switch and I find out that you have to set the open and close time on the switch himself, if you read the manual you should see how to do that.
Dear Daniel
Please let me know if it possible to add reverse button in order to link single button with curtain so when it on it will roll up when off it will stop and if it on again it will reverse (down)
On other words link other device button to act like S1 in dual r3