Hi Andrea,

About chapter ten and eleven numbering.

To fix the issue we need to change right border of page or choose a different chapter style.

In any case we should to double-check all pages because printable area decreases.

I prefer to change right border from 2cm to 3 cm.

It can be done in file common/settings.tex line 5

from \geometry{right=2.0cm} to \geometry{right=3.0cm} 

If you want to change chapter style go to line 31 and change

\chapterstyle{madsen} to something else.

Some chapter styles are shown in 

Best regards,

Andrey