I looked at the source code. Its easy to understand since its just accessing/requesting data from IE plugin but you should really use a webkit.NET plugin instead.
There's a link hereI did't look at the form design, but it would also be good to display, or add an option to show the browser plugin.
*Don't forget to suppress error messages from JS*
Well, i can vouch that
the source code I see at
GitHub is 100% safe.
I can also vouch that the source code of
the executable that I see at
Dropbox which is 20.5 KB (20,992 bytes)
is 100% safe. I manually decompiled and scanned the file.
More detail ...
All the program does is implement a browser add-on, loads a webpage, clicks buttons, and checks the state of the browser... it doesn't even cache any data. The program is fairly simple (the UI and the code) I don't see any sort of exceptional handling from errors caused by the browser add-on... So, you'll likely encounter errors or crash is you're using different Windows version (such as Windows 10) other than the one it was built in/for.