Taxman tax return for freelancers

After I had looked at some reviews and Beaurteilungen the Internet, I decided this year for TAXMAN. So far I had always resorted to QuickSteuer Pro.
The assessments were overall so positive that I have thus decided to use TAXMAN.
This I have unfortunately very regretted. After installing Windows 8.1 (which worked perfectly) I have started the program and started my tax return. In particular, the evidence contained Manager I wanted to use. After I entered almost all records, crashed off the program for the first time. The last entry (approximately 20 documents) were no longer present. So far so good, so I tried to enter these documents again and each each document to assign a category. And I realized that, although there are limited sorting options, but these are very inadequate. It can then be ascertained only with manual work, which documents are missing in the system and what. After I had finally acquired all the documents I tried this then assigned to the individual tax categories. One can (as far as I could tell) only assign each individual document, ie several documents can not be assigned a section at a time, so much time, because every time the document overview has to be called again. Then you can also enter the documents into the appropriate places (including a document manager). In addition to functions Seklektion and advanced search (schlamping and incompletely developed) are missing. In addition, then I crashed more times TAXMAN from and every time any data was lost, for example, the entered Belegkatergorien (and the one I had myself strapped)
In this form, I consider the program for non-operational, also I have in relation to the expected results at all no Vertrauchen, due to the multiple system crashes and data loss
How can you bring to the market as a Prodrukt ever.
Since I purchased the program by download, the return or Sornierung is probably not so simple, let's see what I can achieve. Anyway, I've lost about 2 days working on my tax return