@acer thanks a lot for looking into it!

I can see the third Section as well now, but not all of it - makes sense that the file is corrupted starting in there..

So there is nothing I can do to get my old work back?.. :(

Well at least I got most of the third section now

Thanks again for replying and taking your time to help me

@acer 

I tried to compress it to a .zip file

Beton_-_Notat_og_opgaveark.zip

Hopefully this works