Sorry this happened to you, and thanks for bringing this up. This is a serious issue and fixing the loophole will be my top priority. While the app is being fixed, I'll also:
- Temporarily remove all designs with "No saving" from Online Houses. They will be restored when the app is fixed.
- Remove the designs that copy your work from the Custom Design Catalog
This should prevent further copying while the fix is in progress.
Update: The loophole has been fixed in the latest version. Earlier versions of the app are also no longer able to access online designs, so this should close the issue. Again, sorry that this happened. Hope you'll still continue posting your designs!