Okay, so far this is what I've been able to dig up for RMN Online Cash Back Offers:
1. RMN just updated their policy to 3 redemptions per offer. And 10x total cash backs per month. You have to add the offer each time.
2. After the offer is clicked/activated, it should go to pending status once it is triggered (saying you made purchase online or instore).
You can not redo the offer before it passed through pending status to be finally credited, which usually takes about one week. Then you can do it again (add offer –> offer pending -> credit) . So the answer is NO, you can not trigger it twice in a short time.
I love talking to myself, I find myself quite entertaining!