Select your object, go to the General tab on the right side, go to the Static Mode dropdown and select Physics On instead. Then untick Affected by gravity and ensure IsImmobile is set to Yes. Then you can attach your door behavior.
Static Hull and the like are only for collision purposes and don't make a model ready to be used with Behaviors. In order to use a Behavior with an object, it must be a physics object and not a static object (and that's controlled by the Static Mode dropdown and not the Collision Shape dropdown).
Intel i9-10900K 5.10GHz, 64 GB RAM, Nvidia GTX 1080 ti 11GB, Windows 10 64-bit, dual monitor display
