Could you send us a message at support@formlabs.com? I would very much like to take a look at your .STL file so we can help resolve your printing issues.
Check your resin tray. I bet it’s loose. This happened to me too, and the resin tray was moving from vibrations of the printer motor. Do not shove the tray in all the way, but instead make sure the clips are holding it in place. You can wiggle it a bit to make sure the clips are holding. After I did that the problem went away.