Universal Mobile Ads for iOS & Android

Universal Mobile Ads 2.0 is has a problem with loading ads, until I restart the phone.
Pre-conditions:

  1. Ad mediation order is Chartboost -> Vungle -> Ad Colony -> Unity Ads (Rewarded videos)
  2. No frequency caps

Steps to repeat:

  1. Install the game to Android: Skate & Strike
  2. Tap shop button and watch an ad. It will work fine.
  3. Close shop screen, then reopen it. You will see that another ad is successfully loaded.
  4. Press home screen, then remove the game from the RAM using task manager.
  5. Launch the game again, and go to the shop.
  6. You will see that ad is not loading anymore, even if you wait for minutes. It say it is a network error and ad is never being loaded. If there isn’t any problem with loading ad, wait for a couple of hours and try again producing the problem.
  7. Restart the phone.
  8. Now it will load an ad successfully.

Same thing is happening with interstitials too.