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Hey I just got this and unfortunately the z axis won't move up or down. It makes a sound like it's trying, but nothing happens. When I hit home to level it, it came down super slowly. Other axis movements work. It's under warranty, so I can replace or return it, but I won't be able to get it our until Monday. Is there anything I could try? Any tips? Monoprice just told me to return it. That it's most likely a sensor.

I opened the bottom out of curiosity. Everything looked to be in the right place and tight. (I hate returning another 3d printer, after my anycubic came broken. I must be cursed. Lol)