Contact
The way to reach SmartQueryTools is by email.
Reporting a bug
Say which tool you used, the file format, what you expected and what happened instead. Your files never leave your browser, so we cannot see them. A small sample file that shows the problem, with nothing sensitive in it, makes a fix much faster.
Suggestions
Ideas for a new tool, a new file format, or a public dataset for the data catalog are welcome. Send them to the same address.