Always take payment up front in future
I have always done it, and he had already placed an upfront payment, only to express his generosity.
In this case since the customer has not paid, you have every right to post the paper online
I am waiting to seek advice regarding the appropriate action that should be taken, since he had paid the upfront payment. The only big mistake that I made is submit the paper in whole instead of bits. I do not know what to do because the client seems to have varnished and can't find him anywhere. Anyone with a clue of how to go about this situation? I have sent the client several messages, but he has not bothered replying to any of them.