Scale applied. Well, the size is about 75 meters larger than the red standard :) I tried manually reducing it to 0.03 in your tool - then the model is slightly taller than the standard. In that case, the model behaves more reasonably, although it’s still pretty weird. The limbs seem to be longer.
I don't think the problem is with the model. The problem is with my clumsy hands. Since I tried another model, which definitely has no problems. I exported it the same way and opened it in the tool – the result is the same – a 75-meter giant.