Hey @NilartPax , no my SM2 works perfect, you checked the bed screws from below?
It’s important that assembled carefully, and step by step.
Then, update the firmware V1.7.1.1 and take the newest Luban 3.4.2 software.
And let us know.
Sorry when my english isn’t perfect.
check all taht things, if the error still occurs, send a message to snapmaker support.
regards Bilzer