[Long-term client not reviewing completed orders]

Hi y'all!

I have this awesome client that I have worked with for over a year. He has a steady flow of jobs and is generally nice.

The only one problem I have with him is that he lets all the orders auto-approve. I have tried engaging him on the same but he ignores my requests. Funny enough, if I ask anything regarding the order instructions, he'll respond almost immediately.

I figured that maybe he doesn't have the time or doesn't want reviews on his page (since you have to review the buyer to see their review), but I told him he can "mark the order as complete" instead. 

NB: I should mention that I'm in the "Early Payout" program. I can withdraw payment for an order as soon as the buyer leaves a review or marks it complete, as opposed to waiting for 2 weeks. 

So my question is, could there be any other reason he's ignoring my "simple" request?