After testing I realised it was the way I added the addr information. I've edited the entries back to 'residential'. The buildings should now have appeared. Thanks for your comment!

Is this caused by the way I added the address data, or is it a bug of the app? (Every Door)

This is the shop: https://co.todosnegocios.com/papeleria-tati-302-3329643

Thanks for pointing me to that resource! The correct category should be 'stationary'.

Όχι, είναι αποκλειστικά για παραγωγούς. Έτσι διαφημίζεται και απο τους ίδιους.