Doesn't look like there is a public repository. But there is a support forum where you can file issues.
Edit: kinda makes sense reading the license, it is not opensource.
License
Files is free to use with basic features. To remove the license-popup and unlock additional features, you may purchase a license [$39] from within the app.
Edit: kinda makes sense reading the license, it is not opensource.
License
Files is free to use with basic features. To remove the license-popup and unlock additional features, you may purchase a license [$39] from within the app.