hi, I'm no designer (you may have guessed lol)
but think you need to lose the cheetah association, beautiful animal but makes coin and site look a bit crazy imho
anyway, this is a good alt I think and someone with good design skills will do a great job I think
here's my tiny contribution. I like this style of F and something along this lines would be good I think
red for fast and speed, maybe getting hotter and like this sort of shape to the F like flying payments across the net
also this style of F looks like a currecny symbol
