Please do not duplicate your posts
Forcing the crack wider doesn't help, it just leads to more of a mess that is harder to repair. Glue repair the wood as per Mottie and fit a larger hinge with an offset 4 hole pattern so the screws don't all conspire to split the wood down the same grain. When fitting new screws, pre drill the holes to just less than the thickness of the screw shaft (not threads) and use short fully threaded screwsstuck three rawl plugs in the holes. working so far