Oh god I feel bad for you… I had this problem and there is an extensive thread about it. I’m seriously just starting to think that some printers just have an inherent flaw with manufacturing or perhaps its a QC problem. I love my printer, but that was a beast of an issue that really was upsetting.
Best I can say is try to follow along with the recommended troubleshooting steps and open a ticket with support.
Snapmaker’s support is actually really good.
Here is a link to the post: