Suspicious TikTok Ad Conversions – Anyone Experienced This?

I recently ran an experimental ad campaign on TikTok, using Branch io to track events like installations. After running the campaign for a day, TikTok reported 110 conversions at $0.70 per conversion, which sounded too good to be true. I double-checked in Branch, and it was indeed showing 100+ INSTALL events. However, I noticed **0 signups**. I’m also running smaller ads on Instagram, which are converting well. This makes the 100+ installations with 0 signups from TikTok suspicious—there’s no bug or red flag in our sign-in flow, as we’ve already had 1,000+ signups through other channels. As far as I know, the only way Branch can log these INSTALL events is through the SDK configured inside the app. This makes it seem like someone or something is genuinely installing the app in bulk and then discarding it. Has anyone experienced something like this before? (I’m waiting for my Google Play Console metrics to update so I can debug this further. For now, I’ve paused the campaign.)