If you've found a bug in MediaElch check the changelog of the upcoming version first. It may have been fixed already.
If it is not listed there try to give as much information as possible. This may include the following:
- MediaElch version
- Operating system
- Used scraper, exact search title you used, settings (language)
- Filenames and folder structures
And please report bugs in english. It is much easier if others can also understand your problem and may help to solve the problem.