u/More-Performer-3408

I have been running Reddit ads for 2 months to promote 4 iOS apps on the App Store, and my core KPI is in-app purchase conversions. Here is my current campaign setup and issues:

1. Product 1 – MAX Campaign I have completed Reddit Pixel installation for this app only. The campaign optimization goal is set to App Installs. The campaign keeps spending my daily budget steadily, but I only receive app installs with zero in-app purchase conversions. It’s just burning money with no revenue at all.
2. Product 2 – Standard Regular Campaign No Reddit Pixel has been implemented for this product. I set the campaign objective to App Installs, and the app event optimization goal is Purchase. This campaign can generate 1–2 paid conversions per day stably, yet I can’t scale up the spend and volume no matter how I adjust settings.
3. Product 3 & Product 4 I copied the exact standard campaign settings from Product 2 to launch ads for these two apps. However, there is barely any impression, click or conversion data for both products.

All audiences I adopted are Reddit’s AI-recommended audiences generated based on each app’s features.

I’m stuck on optimization and hoping to get practical advice from experienced marketers:

• Why does the MAX campaign only optimize for installs instead of high-value paying users even with Pixel deployed? How can I adjust MAX settings to improve purchase conversion?
• Why can’t I scale my standard campaign for Product 2 without Pixel, even though it brings stable small-volume purchases?
• Why do Product 3 and 4 get no traffic and conversions with the same working standard campaign structure?
• How can I optimize Reddit AI audiences to filter low-intent install-only users and lift overall purchase conversion rate?

Any troubleshooting tips or scaling strategies would be highly appreciated!