not bad at all.
Review please the space between the symbol and the logo, on the horizontal version. It's currently a way too far. It should be clear that they belong together. Resubmit it again please. That's one thing.

Try also following:
Try if it's possible to "integrate" the C of Coinsbox with the black part of the symbol (just as idea).

Feel free to submit any ideas you have.

Good luck!