So is this 100% sure? I don't know should I just go with this online wallet or should I mess around with the clients. Clients do seem very complicated. I manage to get to work GETH on one of my computers, but on the second I didn't manage, I keep getting an error.

I don't know should I waste time on the clients or should I just use this online wallet.

Can somebody with more experience please confirm.

Thanks!