If they are not level, check to see if the left and right hot ends are bent or deformed. If yes, you need to replace the hot end.
Repeat XY Offset Calibration multiple times, and gradually adjust back to the appropriate value by saving the scale with the highest of coincidence each time.
Use a multimeter to measure whether the distance between the centers of the left and right nozzles is correct. It should be around 25mm.
Print XY Offset Calibration again and select the scale with the highest coincidence to save.
After following the troubleshooting steps, if you find it difficult to resolve your issue, kindly submit a support ticket through https://snapmaker.formcrafts.com/support-ticket and share your troubleshooting results with some pictures/videos.
Our dedicated support team will be more than willing to assist you in resolving the issue.