@onkt. Thanks for contacting me. First of all, Version 3.2 doesn’t support Joomla 2.5. It works on Joomla 3.4+ only.
Sorting has been tested and works. So, I am not sure what you are talking about. However, there are 4 types of sorting algorithms to choose from, and for each one you can specify the sorting direction. You should also specify which column to sort by.
The sorting algorithm you choose directly influences how the sorting is done. You should try the different options to see which one works best for you.
Let me know if you understand what I am referring to. Next time, please post a link to your webpage so that I can understand what your problem is. Thanks.