The products are listed as many times as the product is linked to a category:
if a product is in 3 shop categories it is listed 3 times in the app.

I already reported to our developer regarding this, it seems like we missed if the product post in multiple categories, I will log this issue into our issue tracker, will update you once we fix this.

Maybe we will see now some custom fields for a better integration between the components ?

Thanks for your input, perhaps you can start a new thread and post in "Easysocial - Feature request" category so our developer will come to review it and see if a lot of user request this, we will definitely consider it.