Rejected for Guideline 5.1.2(i) despite using ATT: How I got it approved with just a reply

I was told by App Store Review that my app "does not use App Tracking Transparency (ATT)" based on Guideline 5.1.2(i).
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Apple introduced App Tracking Transparency four years ago: Here’s how it’s going

9to5Mac is brought to you by Incogni: Protect your personal info from prying eyes. With Incogni, you can scrub your deeply sensitive information from data brokers across the web, including people ...
macobserver

App Tracking Transparency: What Apple’s Prompt Actually Blocks, As Documented

App Tracking Transparency requires an app to ask permission before linking data collected inside it with data collected by other companies’ apps or websites, for advertising or for sharing with data ...