It is frustrating when someone attempts to repair a crack like this and the repair goes south. Inexperienced? Starved joint? Who knows.
It makes a relatively straight forward repair into a project.
Epoxy is definitely the adhesive of choice for this one. The hard part will be to clean out as much of the residual glue from the botched attempt. After that the epoxy should hold. As for the holes, either cross grain plugs or metal inserts are good. Depends on how much the OP wants to pay. Inserts are deluxe and the price should be, too.
It makes a relatively straight forward repair into a project.
Epoxy is definitely the adhesive of choice for this one. The hard part will be to clean out as much of the residual glue from the botched attempt. After that the epoxy should hold. As for the holes, either cross grain plugs or metal inserts are good. Depends on how much the OP wants to pay. Inserts are deluxe and the price should be, too.