ᐅ Adjustment of Gaulhofer wooden doors no longer possible?

Hello,

I have some glazed patio doors here (with divided lite glazing, Gaulhofer, about 30 years old) that can no longer be adjusted. The door is set too deep and is blocking at the bottom on the hardware, but the Allen key can no longer be turned any further.

I'm at a loss, can anyone help?

I am also puzzled. Maybe it can be explained better with pictures?

Without more information, I would suggest taking the door off its hinges and planing a bit off the bottom.