Currently, as the memory pool experiences growth, it is possible for transactions to wait for confirmation longer. It seems like there is not much we can do about it. As for the identification of transaction fees by users, we will take a look at this idea. If it will work positively for us, we will implement it.
But I have been not given chance to decide the amount I want to attach my transaction.
In this case I'm expecting for CEX.io to assign a fair average amount of transaction fee. But even the average was 450satoshi/byte, it has been given by CEX.IO 245satoshi/byte.
What you will do about it?
What is the expected transfer time for 245satoshi/byte at this moment?