Hi Tiago.

Unfortunately, it's true. As the app is bound to the model, but the model is not available anymore, you will not be able to install the app (as it's not possible to download, open and edit it). 

I think the only solution (for now) is for the maintainers to update the asset.

But ideally, the platform should allow installing it with the broken dependency and the user would fix it, or allow to select a different model and the user would make any changes required.

Cheers!