@cjcharles has been working on a new DH for this @ Fibaro binary input (Dual contact and temperature sensor) - #34 by cjcharles if your having issue.
I just altered the ST simulated contact sensor so that it was read only in the app so didnt fix anything it just made it so you could only physically change it rather than virtually as well. But with the new DH you wont need a app to link the devices and wont need to manually create them as it will do it for you.