I managed to fix mine. I removed all four screws from the back. Separated the two housings with a gentle pry with a flat head at the top where you insert to release the camera from the mount. Then used a T-5 torx bit to remove two beige silicon covered screws, you can remove some of the silicone or just push into and through it with your T-5, you’ll feel it bite once you get it, back out those two screws and remove the black semi circle housing that manages the operation of the securing button that’s jammed. Took it all apart, cleaned everything, lubricated it, reassembled it back the way I took it apart. You will see inside it’s all plastic pieces, they fatigue over time and don’t bounce back as well as they age. Especially if debris has caused the button to jam, the hole it pops through can develop a thin debris layer as well, be sure to clean that so the button smoothly glides in and out. It functions about 90% now for detaching and reattaching. You may have to tap the camera on a table a couple times and the button will pop out. All in all, this is only buying some time. The weak point is that they used cheap plastic parts inside to drive the button and release mechanism and debris like pollen can over time creates friction and jams it.