I can’t get everything to line up

I can’t get all of the boards on this box I’m designing to line up. My pieces are the right size but they snap when moving and won’t line up.

Hi, we will like to take a look. Please send the workpace in Shapr format to support@shapr3d.com.
We will investigate the issue and then get back to you as soon as possible.

why when a plane is in the middle of a subtract it causes a cut to the plane even though there is no geometry on it

I can’t because I’m not pro. I’m trying this it trying to decide to buy. It’s expensive but if I can figure this out I’ll buy it