There is no coin at current time, they are actually selling ERC20 token, according the roadmap ADG MainNet will be released by May 2019. ADG token holders could exchange the ADG tokens for the ADG coins with a 1:1 basis after the release of the ADGONOS Platform.

Now: they are selling ERC20 token
Later in 2019 : ADG coin will be released and token holders could convert their token with a 1:1