I can see that yours has broken differently to mine. So the fix in the link wouldn't work for me, sadly.
On mine it is the little placky thing that rotates a bit to make it click shut then click open that bust in two. I tried various glues and none held.
Yep, that's snapped on mine too. I managed to get it to stick with some epoxy and held with duct tape. Worked fine if you were careful, but then you forget it's broken a few months later and aren't careful enough...