Yes becase of the hard work of them the project collected a good amount in their ICO. In the current market it is not easy to collect that much many of the projects fail in their struggle but as this project has a solid business and a talented team so everyone invested in this project.
One of the reason is that this project already have a well established product/platform so it attracted a lot of investors. Most times it happens that after the ICO the projects are unable to prepare the product so the investors lose their money but when they invest in a project with already prepared product then they get a solid profit.
Yes that is basic reason for the success of this project and we can see that the platform is well tested and it do not have any bug. The users of the platform are using it happily without any issue or hurdle which is making the project more perfect.