Dear Pualino ,
Kindly find the following answers for your questions,
1- You can check the code line by line in these sheets and what are the reasons of not selecting any data , following the code line by line will help you to catch the problem and find the solution for it , However you can upload your sheet and i can do it in your behalf.
2- yes , you can indicate the division number to get areal result than getting “0”.
3- Yes , may be these cells contains spaces for example so they select them , or you can check the code in this sheet line by line and check why selecting this cell.
4- Yes, you can change any titles to be as you want and of course it will be reflected in your result of naming the main description also.
You can try to make these trials and checks and upload your excel file for reviewing it.
Thank your ,