Neff door hinge has jammed, can't get it back on?

I've had to take our Neff slide oven door so that i could clean the inside of the glass - now i can't get it back on.

The hinge on the right isn't locking and therefore not attached to the runner. I've tried to manually force it down so its connected to the runner and I've popped the door back on but its not level.

Any help gratefully received.