I implemented the rewarded interstitial ads in my games and during my final testing I found out that many ads (real ads) were not skippable making it problematic since they should be skippable by default. I validated my code and I use exactly what is described in the SDK implementation. I also validated that I use the right ad unit ID. I receive properly the reward, they show properly. Some ads are correct (can be skipped and I have a popup mentioning that I will lose the reward if I skip).
Note that I was using mediation with open bidding and Facebook. I am wondering if this could be the issue since for Facebook there are no "Rewarded interstitial" and the documentation says to just create "normal" reward property which I am pretty sure many of Facebook reward Ads are not skippable.
Could it be the issue and so I should not use mediation? Or is it something else?
I removed Facebook mediation and today all ads are skippable. But it does not mean this really is the issue. It could just be that those ads received are skippable.
Any help appreciated.