No whitepaper, blockexplorer seems unavailable, no visible/public team, no bitcointalk forum, not any social media for that matter (site gives you just homepage links to social media platforms), github not updated since 2 years (hard to find the github account btw). It is totally unclear if this was an ICO or a fork, because there is literally no other information than the website, that gives little information to begin with. Complete vaporware coin that I think is already completely dead. On CMC we can see a sudden dump around mid Sep 2018 https://coinmarketcap.com/currencies/harmonycoin-hmc/#charts, maybe there was a news event, or the exit occurred; I wasn't able to find the information though.
Oh I just noticed that there is also another Harmony coin with HMY as ticker, this seems to be a different coin, so you might wanna be careful which one is which.