"We don’t know why your ads aren’t showing for this search", DOES NOT mean that the account is under review.
It means that the ad with that keyword, is LIVE .... Wait to see if there are impressions & clicks, if no impressions & clicks or low impressions & clicks, then next, check the ads / keywords https://support.google.com/google-ads/answer/2472742?sjid=17554996638595047441-AP and you may have to increase keyword bids (and also perhaps increase daily budget if applicable, to support keyword bids). Also see https://support.google.com/google-ads/answer/1722122 for more insights.