Education is expensive that is why there are a lot of fake diplomas. If it will be more simple to check the origin of the diploma it will be less fake diplomas, but to do this it is necessary to have a big database.
As I understand the most difficult thing is to create a big base of diplomas, that is why the development of the project takes so much time.
Project is developing from 2017. It was enough time for development and to create a big database of diplomas. Hope it will increase in future.