If you have a housing that does not have an exposed slot on the hinge of the backdoor, then there is an alternate tethering procedure that you can use.  Please follow these steps:

  1. Loop the tether around one mounting finger of the camera housing.
  2. Fix the housing to the quick-release with thumbscrew.
  3. Loop the tether through the adhesive anchor.

This applies to the Blackout Housing.

Here is an image showing how it appears when the tether is attached properly: