ios – Alternative icon not showing on AppStoreConnect

I’m trying to add alternative icons so I can run an A/B test on the AppStore (Product Page Optimisation). When I try to set up the test, the option for an icon is not there.

Here’s how it’s supposed to look according to Apple:

Here is what I’ve tried so far:

Build settings – Asset Catalog Complier – Options

1. Added “Alternate App Icon Sets” – DarkIcon
2. Marked “Include All App Icon Assets” as Yes
3. Set “Primary App Icon Set Name” – LightIcon

General settings – App Icons and Launch Screen

1. Set “App Icon” – Debug: LightIcon + DarkIcon (iOS) & Release: LightIcon + DarkIcon (iOS)
2. Ticked “Include all app icon assets”

Neither of these worked – Didn’t show up on AppStoreConnect. Also, when I upload a build it shows only one icon under “Included Assets”.

I tried to look for official docs, but couldn’t find any…

Any help would be appreciated! Thanks.