Promotion is a very important think. Everybody must know haw simple to check diploma. If it will be simple to check diploma it will be less fake diplomas.
Yes, they need a big advertising campaign. Agreements with educational institutions. In addition, many people do not know or do not understand the possibility of cryptocurrency. It will take time before such services can work everywhere.
Certainly this process will be long. In order for a large number of people to know about the project, you need a lot of advertising, but the best advertisement will be that the project will start working and can be useful.