I have invested in this project since ICO times and am pleasantly surprised.
First, value of the investment has grown several times (despite the overall fall
of other crypto-currencies).
The guys are following their road map very good - created their ARB currency,
listed on exchanges,
started auto and manual arbitrage trading
and you could easily add to your investment (via ETH) or withdraw it
(even you don't have ARB tokens).

I deposited and withdrawn several times - all working perfectly well,
now invested more and switched to aBot (auto-bot) - gives 0.7% daily -
not much, but stable and don't need to do anything and worry about anything.

I could submit payment proofs - not sure, how to do this.