Universal Mobile Ads for iOS & Android

Hi I’m having issues getting rewarded video ads (ad colony, on ios) to show up in my project while using the plugin.

I’m running a packaged (dev) build, everything builds and runs fine on the device, but when I try to get a rewarded video to display, the blueprint function: “universal mobile ads Has Rewarded Video” always returns false.

As a note, I’m using: “Universal Mobile ads load rewarded video” on begin play, then some time later during game play I check to see " …has rewarded video" which is always false.
I’ve double checked the Ad unit Ids multiple times and they are 100% accurate to what’s in MoPub.

Any ideas what could possibly be incorrect or missing?
Any kind of support would be greatly appreciated, I’m loving what you guys have provided in this plugin!