Help > FAQ > Please run Steam first and then start Soundpad from there.
Show menu names in
This message is shown when the Steam edition of Soundpad is launched by its executable without Steam running. It may also be shown if Soundpad files are broken or missing, or if your Steam client is not up to date.

Check file integrity:

Right-click Soundpad in your steam library -> Properties -> Installed Files -> Verify integrity of software files.

Check if Steam client is up to date:

You can check it in the Steam library at the top: Steam -> Check for Steam Client Updates.