That is not efficient staking as those are all max rewards. Coin age is being wasted because the inputs are either too large or have sat and accumulated coin age for too long
That was my thought. I added info about efficient staking to my ticket with them. Still haven't gotten any responses about anything yet though.
You are correct
Is there another way to get a hold of whoever runs the site? They haven't been active on Twitter in a week and a half, aren't responding to support ticket still, and still aren't staking (just for perspective, the deposit I personally made is already at its peak for earnings -- I deposited 5m a couple days ago -- so that itself is already losing value due to not being staked, not even taking into consideration the other 15m+).
He used to watch this thread, I think his username might be poswallet or something like that
Well, he released a new update to the site but still hasn't responded to my ticket. And as of now no new blocks have staked yet, so everyone's still losing coins. Wish I hadn't sent all mine over there,
. 
. Also wondering what their returns will be like (assuming this is fixed). Over the past 30 days they've only staked 10 blocks. With 15m+ coins in their wallet, they should be staking far more frequently than this.