Yes.
You should request your money back then, be sure to cite 'unprofessional tech support'

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I suggest you back up your database (it is at %APPDATA%\f95checker\db.sqlite3 ), then be sure to kill any instances of it that may be stuck in memory via Task Manager, then delete all associated files (other than your DB backup of course). You can redownload the latest version at
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and reinstall. The leading culprit for this problem (failure to launch) is imgui (creates the windows) due to video driver changes or anti-virus blocking it due to not being signed. Let us know if this fixes it or not, not sure what else can be done to help you though.