Doesn't work

Seems like a nice program with a good interface. Tech support answered ticket very quickly. Developer has produced no documentation so I had to guess how it works. After several hit and miss attempts, managed to import a few products. Tried reproducing the exact same steps with more data and it didn’t work. Tried various options, didn’t work. Program didn’t read the column headers correctly, often missing letters and adding new line feeds. Results were loaded and imported, but no products created.