I am trying to make a category with the subcategories '0'...'9', and 'A'...'Z'
That works, except for the '0' folder. I'm not allowed to create a category with the name '0' (why is that?)
Other question: a subcategory listing is very bulky, you get only 12 cats on a HD screen...
How do I get a 'lean' listing? (previous with Phocadownload I had 30+ items on a screen, much easier for the user...)