Thanks for that, I couldn't see how it would have been related to anything else but I'm no expert.
achow101 already answered your query. It is related to blockhain.info. I saw that you sent 0.5353098
BTC to another bitcoin wallet address. I suppose that it is a new wallet address. That's the best thing to do for now, contact the support of your online wallet provider and let us know if your transaction is already fine and solved.