You beat me to announcing that coinking.io actually sucks...... Later today I plan to fiddle with the rig to see why nicehash is "misbehaving" and get it switched back.
I googled it and I think there is a bit of config that can be used to disable coinbase checks, which are what it hosing it up.
Also another idea since the dice site is going nowhere is I was thinking about pulling coinjoust.com (sorry I'm not sure how to link on my phone.....) out of retirement instead!
The basic idea is folks send in a bet, it is matched with a bet another user sends, and then the winner is picked with a coin flip.
I have some plans for updates, but if anyone wants to preemptively check it out and provide feedback that is appreciated
The biggest improvement would be a way to automate it since the whole site uses manual effort and more than a few tricks and bastardizations of Wordpress 