Storyboard pro6 disappears as soon as I opened the project in Mac

Storyboard Pro Storyboard Pro - Support and Troubleshooting
1

Storyboard pro6 disappears as soon as I opened the project in Mac , It minimises and disappears in a sec.
Menu bar is visible and in the dock it shows the files is open.

Can anyone guide me to sort this out.
I working on the latest of Mac versions Mojave

Thanks in advance

2

Try menu-Windows-Restore Default Workspace.

It’s possible the autosave for the workspace saved
the software layout in “minimized” mode.