Model Target Test app doesnt load dataset

Hello,

I've created a model target dataset using MTG

I installed the android app (test app) and uploaded the dataset to the folders specified in the guide.

I launch the app, then try to load the dataset but when it tries to load it returns an error that says "Invalid dataset" Please load a multi-view model target dataset.

I created a single view and multi-view datasets and it doesnt work with either.

I am using the free developer Account.

Thanks for help