Here what I found: adding a 5 seconds delay before starting SKProductsRequest does the trick: now everything works just fine.
vgorshkov
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iOS 14 Simulator can't load SKProducts from the web, but you can add the StoreKit Configuration File and add your products there. This will fix an issue.
See my answer here for detailed instructions: https://stackoverflow.com/a/58065711/558333
PS: can't add images here. I think that's an essential thing for any community.