Vermibus wrote:1. The hotend is moving Up & Down & sides when is printing
It's not loose screws or bolts, as you've discovered. This is the annoying "clicking" issue, so perhaps some of my blog post's solutions for the clicking extruder will help, whether it be higher temperature needed, loose drive gear, wrong trimpot settings, etc. If none of that helps you, it could be something else (but hopefully not).
Vermibus wrote:And then start to print with a z zigzag movement hmm
It's hard for me to tell what's wrong. The first thing I see is that your print is lift quite badly on the corners, so you'll need hairspray or something else. I found that ALL of my prints experience lifting until I started with hair spray.
Is the issue that it didn't seem to print the right model at all? Is it supposed to look like the zig zag arrow in your photo? I found that SoliPrint and Slic3r badly corrupted several models I tried off Thingiverse. The only solution I could find was to use Cura which never showed signs of trouble.
Vermibus wrote:how I can close the holes in the models like the photo (letters F, R, N, A)
Does the 3D model show the holes after slicing? Maybe it's not using enough fill which is a model issue, and not something I have experience with. You can also check your slicer settings - the extrusion multiplier might be 0.6 or 0.7, but you can try setting to 1.0 (100%) which ensures the plastic extruded isn't limited.