Today I got an email from admob with the policies infringement LAYOUT ENCOURAGES ACCIDENTAL CLICKS - INTERSTITIAL ADS.
I didn’t change anything on the game or the admob console recently. The last update published of the game was more than a year ago.
The game uses Interstitials between rounds of the game and all ads are cached.
I have got once email about high CTR although i didn’t change logic of impressions. I just asked support in live chat to give me more details about the probem and they found a problem of high CTR from one network. But I use admob through mediation.
If, for some reason, they don’t like you, they will always find some reason to suspend you.
Maybe there is high CTR that made them suspect your ads and review your apps manually