@BanterBroCarson I have been facing the same issues.
Here are the steps I followed and I hope you do too , need a little bit of time but might be effective.
1: Uninstall app(only if logged in through social media/game centre/play games, guest mode progress will NOT be saved if the game is uninstalled, skip if you're playing on guest mode)
2. Restart the device.
3. Boost your phone.
4. Reinstall game( if you followed step 1)
Now here is the part that would take time .
It's the same old way of.
5. Log in and out of your account in you're not having ads.
Now, seriously, here is how to see if it's efficient, Log out, log in again, play a small campaign or spend some time on the store, auction house or even the home screen. I'd you still don't receive ads after a while.
Repeat this step, multiple times,I had to do it 7 times to get my ads.
Hope this solves the issue. Revert back if this procedure is inadequate to solve your problem.