The controller should work on the latest 7th heaven app.
If you want to use the controller addon, it doesnt specifically enable the use of controller,s but rather it replaces text prompt such as [OK] with a button icon, you will need to use Enhanced Stock UI if using the controller addon.
New threat now also includes controller icons, so dont use the controller addon if you play new threat, the controller addon is designed for use with the vanilla gameplay.
If your controller doesnt work at all, then the controller addon wont fix that, if it doesnt work, try disabling ds4windows before launching the game with 7th heaven.