I see the time and date of the first transaction 0.01ETH and looks like there were almost 24 hours between this one and first 16ETH transaction.

Anyways you explained why you sent this first small transaction and I believe you.

The only question which comes to my mind is why haven't you tried one more time with a minimum amount which was 1ETH?

But I think we already know the answer and you will never do such a mistake again. Very expensive lesson.