Do any ads network block as AdMob does?

Since 06.11.19 my AdMob has been blocked (Ad serving limit placed on your AdMob account) without any reasons. Now I'm thinking to install UnityAds. I have a few questions:
1. Does UnityAds block limit accounts?
2. I want to have Video Rewards. Right now my game simply doesn't show any ads and it's working as there weren't any ads before. But if I'm going to use Video Rewards, how should I deal with popups where a user is pressing the button to see Video and get his/her reward? I mean, imagine if a user sees the popup which says "press this button and watch a video ad and get 500 coins" he/she presses the button and sees nothing because AdMob blocked the ads account for this game. Probably the game would crash or would wait an indefinite amount of time for the video to end. How do people deal with this kind of situation? 
3. Any useful experience using UnityAds or suggestions would be greatly appreciated!

Hi

In the past I have avoided the issue by using multiple Ad Networks in each game. In my latest game I favored Unity Ads but If Unity couldn't supply an Ad (i.e if the Ad didn't show) I would check Ad Mod and if an Admob ad didn't load I just had it show an ad for one of my other games that I made myself. That way I could be sure that at least something happened when the player clicked the  show ad button

I think each of the Ad networks have blocks or wrappers to check if an ad has been shown or loaded.

Hope this helps

Thanks, Electric Fruit for sharing it! It's a good idea to promote your project. Unfortunately, I can't find any blocks fro AdMob in Stencyl with which I can check if a banner is up and it's very bad. I think I will get some angry reviews after I fix ads banner because people will think I suddenly decided to put ads everywhere.

Ad mob doesn't have a block but it does have a wrapper to check it a banner ad is showing / has loaded etc. Go to "ADD EVENT" and then "ADS".

I have used Unity ads a lot, but I'm not sure I fully understand your question.

My experience with Unity ads:
1. Easy to implement.
2. Banners don't' work, because Unity has a shortage of ads in banners and people complain that their banners are never filled. For about a week that I had Unity banners in my game Unity according to its own stats hasn't shown a single ad.
3. Rewarded Video always works at least on my own device and I live in EU. It's hard to read the stats about Rewarded Video because users don't always want to see them and they don't see them that often in a game.  At least no errors and numbers of requests are very close to impressions. 

colburt187, what extension do you use for Unity Ads? I've read that they will in early 2020 "fully deprecate the old API for greater data consistency". I'm not very sure that byrobingames is interested in updating Unity Ads Extension. I might change Unity to Heayzap... when I manage to make Heyzap work. Right now it crashes the game.