I integrated Unity Ads to my project. At first, I got
UnityAdsEditor: Failed to contact server.
UnityEngine.Advertisements.c__Iterator0:MoveNext()
error. After trying couple of times, it started to work fine. I waited couple of seconds until Ads are ready and they were showing correctly and rewarding the player. However, this error started to show up again and I can’t make Unity Ads work anymore. I am connected to Internet, Ads worked couple of times before so I have no idea what the problem is.
I also tried to disable checking ads in the first scene but it didn’t work either.