Where are the logs stored?

In the program, select "Help", then "Open the folder with logs.". A folder with logs will open. Usually the support needs a file with the last change date.

Also it is possible to do it manually:
For Windows XP:
C:\Documents and Settings\USER_NAME\Application Data\TradeMatic LLC\Data\Logs

For Windows Vista/7/8/10: C:\Users\USER_NAME\AppData\Roaming\TradeMatic LLC\Data\Logs