Presuming you are talking about blockchain.info here, and if so you would have to ask them why their software is inaccurate.
Your best course of action is to use a different wallet since they have trouble all the time.
Your best course of action is to use a different wallet since they have trouble all the time.
Sorry, yes it's a Blockchain.info wallet... I know, I registered a Coinbase and now I want to transfer my funds, but I made 3 transactions and all of them were rejected. And now it looks like the same situation with the recommended fee.