This pretty much comes down to a double scam honestly. The OP tried sending 1 kind of token and pass it off as another, while the receiver just took the token and disappeared.
They are practically the same thing though. The official website states that they can be converted to each other via the app and OP seemed to make it clear that ripplecanavari had to download the Infinitus app to store the tokens/credits. Did he ever mention that he was giving the ERC20 version?
He agreed to offer me the loan but I need some small collateral as a symbolism if 10$ or 20$, but I responded negative. I just told him I have Infinitus tokens listed on Coinmarketcap in my mobile app ready to be integrated to ERC 20 token so I will sell them, a Total of 1500 INF worth 900 USD.
You're correct, saved him there I suppose.