Hello all,

I hope some one can help me troubleshooting a problem.
I got an old DOS application that reading out a old system.
The program is running in dos box but after i login and try to press 1 of the 4 options it won't response anymore.
https://i.imgur.com/NTruMJd.png

the login page is fully functional.
This program did run on a windows 98 notebook.

Does some one know why it won't recognize my key input 1 or 2 or 3 or 99.
Thank you already!