Our guild utilizes the RFI on the website. The problem is that we have two RFI's that are stuck in the "Waiting for Approval" area. I try to edit them to show that they were delivered and as soon as I have that highlighted in the drop down menu, it closes with no changes being made.

Also, I would like to be able to go straight to delivered instead of having to rate a priority first.

You can indeed simply mark an item as "Delivered" without having to give it a priority first.

The problem you're probably having right now is a conflict between the popup you're clicking and another popup (most likely from hovering over your raid progression or your currently recruiting menus). This is a bug I'm working on.