I think some data was stolent but I don't know how to check exactly the file has been copied Please help me check Tranfer History form Open Log File
Thanks for your posting.
There are log files generated on each TeamViewer installation which might contain information on whether or not files were transferred. Please access the log files and submit them in a ticket to your local support center for review.
Check out the following links for how to access the log files and submit a ticket for support.