Incorrect Prints

Hello!
My printer (velleman k2800) seems to have some trouble with printing. Everything was working fine, but when I came back from my vacation, the printer was acting strange. (sometimes it didn’t move some of the axes, but homing was working fine) Also when the axes were moving and I started a print, the prints were bad. It looks like the printer doesn’t use enough filament, because when I extrude the filament manualy it looks much better. My Slicer settings are fine. (0.5mm nozzle and 3mm filament)

I hope someone can help me! :slight_smile: