TriSun Software Limited
Here is a request from TriSun Software:
Would you please help us do a test (for the first “invalid” key on a few PCs, if the first key is not working for you, you are able to do below test).
Download the following file and extract all to a place, then run “test.exe”, click “Test” button.
If you get a message, print the screen and send to us support@TriSunSoft.com
Thank you very much!