Window insider is not supported. And what is a preview build?

Related app/team name (not a must if you want to keep it private): CurseForge
Issue Description:
You are currently running the “windows insider Progarm” version of windows. This version is not supported by Overwolf. To continue using Overwolf, you must uninstall the preview build after exiting the program.
Can you reproduce it (exact steps to reproduce):


Window Insider is no longer supported by Overwolf. Please read about how to running Overwolf on Windows Insider: