Bed mesh is backward with Sonic Pad and not taken into account while printing

Hi,

My Ender 3 Ve SE is connected to a Sonic Pad. I installed a runout sensor and since then, I can’t print with it. I measured the bed allignment with the side posts with a square and it was not okay. I printed some chims with another printed and installed them under the side posts and it helped a little.

When I start a print, it prints on the bed on the from of the plate and mid-air on the back of the plate. I don’t know where to look after that.

I was also wondering why in the config, it’s written lagrange while I configured it to bucubic?

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Thanks a lot!