The Halo Mount feels loose on my headset.

Confirm that the top clip and both lower feet are fully seated. Remove the Halo Mount and repeat the installation if any mounting point moves independently or did not click into place.

The headset drifts out of position while I wear it.

Loosen the Main Adjuster, set the height and angle again, then tighten it until both hinge points hold firmly. Rebalance the rear strap if the headset still pulls forward.

The flip-up mechanism will not lock.

Press the release button fully and move the headset to the end of its travel. The button should pop outward when the mechanism reaches the fully raised or fully lowered locking position.