This tree is losing circulation. Ropes and ties damage the bark but, more importantly, they cut into the delicate vascular tissue which is JUST UNDER the bark.
People have veins and arteries. Trees have xylem and phloem tissue. Same thing, really. They are all tubes in which fluids flow to keep the living Being alive.
If you put a very tight rope or tourniquet on your arm or leg, you stop the blood flow. You may save your life but you might lose that arm or leg.
If you put a rope or tie on a tree, you stop the flow of fluids, water, and nutrients from moving around. The whole tree may die. It’s true that occasionally a tree will grow around the rope or tie, but more usually, it dies.
REMOVE TIES OR ROPES IMMEDIATELY.