Hi djeZo I had a strange issue. I rented one of the rigs and it said rig is already hired. But it seems it was hired by me. Not sure what happened there. Wasted a couple of hours it seems
Maybe you hit refresh after you hired it

That would explain the situation.
This is actually what prompted my question earlier, I was worried that me deleting/recreating the rental plans screwed something up. Not sure who's fault it was or what happened, but, he paid to mine his stuff and it was mining mine instead, so I extended Zombie123's lease 3 hours.
It was still weird, and it could have just been a timing thing with deleting/recreating rental plans. I'd test to see that it won't cause issues, just to make sure.
I have explained in previous posts that is is simply not possible. If he was going to hire a plan that doesnt exist, error would pop up and rent would not have happened. But if you do hit refresh after hiring rig, you get message that rig is already rented - because it was rented by you.