This is a project for mining. Just for mining. I wouldn't recommend buying coins at a discord. If you want to buy coins, do it on the exchange. By the way, the names of the team members are not even on the Ravencoin website)
Thanks for looking into our project. Miners only get 45% of block reward, this is much less than others and is far from a mining project.
The website is working fine, more likely an issue from your end. https://gravium.io/
We have been steadily adding more features to the website and block explorer. We have several listings already completed and should have more soon in the coming weeks.