I checked on one device.
The banner always appears on the level map sheet.
The interstitial ad also works.
You have 2 in-game violations of AdMob rules and while the players are few it is not a problem, but if there will be growth then you are waiting for the block.
1. You have the banner is too close to the button! This is a very gross violation.
2. interstitial appears unexpectedly-it is forbidden! You need the button at the end of the level. You have congratulated the player on the victory and he pressed the button "NEXT LEVEL" then interstitial ads and the next level.
It's not too terrible a violation, but if a lot of players go there will be problems.