First it was for free, than I was asked to donate for this really good working tool. I was forced, because it didn´t worked further on. But I saw that it was worth to do so - I donated 10 USD. Really not much. But: I was so upset, that I couldn´t find it freed immediatly and was not able to look clear, nearly hysterically I wrote to the contact for help. It didn´t last 3 hours and I got a personal answer - that´s what I call a good service. The solution was already there, if I had stayed cool, I would have found it in the first time:
