credentials to 911.re proxy software don't work in Sandbox

Moving .exe file into box:



https://gyazo.com/ef72ceb3ba71e93b5ccffad237ab23bb

 

Software opens as expected,  Username/PW prefilled and correct. But getting "login failed" message:

 


https://gyazo.com/adaad72eee02ad0fe18c3ab81909b6a4

 

Per 911, when this happens it's usually a network/internet issue.

However, everything else works within Sandbox without problems.

I know the software is being used, so should work.

Any hints as to what needs to be changed in configuration to fix the login issue?