After you file

I got a tax topic 152 in the past and received my taxes within 21 days. The next year was audited in 2017 and they kept our taxes because our children were not legitimized yet by their father and now they are legitimized and I let him claim the kids and myself this year and hope that we do not get tax audited again but if we do I will have all the proof we need but curious if the tax topic 152 is for identity or not because I have read on here many different things and in the past I had tax topic 152 and received my taxes. I claimed the kids the past 3 years myself but this year I was just a student did not work so kids dad claimed me and kids. My turbo tax said that estimated date to get my refund is 3-23-21 since I filled taxes on 3-2-21 thats 21 days and topic 152 is all mine says so far.