problems printing to scale/ dimensions invisible in drawing and only 50% in preview

Hi there. I have a few issues with my librecad.
1-when I try to print to scale the icon says that the print scale is locked to the current value.
2-My dimension values are invisible on my drawing and precisely half of the true value in print preview.

1: Unlock it by clicking into the tick box.

2: a)  Shown as boxes? Probably View - Draft mode on. Switch it off.
    b) Half value? Check Options - Current Drawing Preferences - Dimensions - Length Factor. Is it 0.5? Set to 1.  

I thank you Dellus, problems solved. You are the best, thanks!