Smartcard Aplication

I have question here. I install DigiSignApplication in toolbox. It went well. Well, in the toolbox I execute shell script and it aplication popup and then die. I do not see GUI. What cause that? I can see it in the process. Is that related to toolbox? I do not realy understand toolbox. Is it running but not outside toolbox.

Hello @juhafinlandvoaa ,
Toolbox (toolbx) is not usually meant for a GUI app. But I think there are some who do this, like in this video