Hey, thanks for explaining!

It sounds like perhaps your Z-limiter switch is not placed correctly, because even with your machine out of square, the nozzle should still reach the bed.

"Huge gap" is hard to gauge, but if your nozzle is extruding clearly away from the bed and you are unable to easily adjust bed level, this sounds like an improper Z-limiter placement.

I hope this helps, and hopefully your machine is not out of square, these are pre-machined holes and if your machine is out of square then it's likely a manufacturer defect and I would personally contact Ender support if this is the case.

I hope this is helpful :)