I have same question here. Currently, Passkey is supported by OS layer, but here is no entrance for 3rd party password manager. Will Apple support Passkey provide by 3rd party password manager? (Like auto fill password by 3rd party password manager)

Hi @CardinalBiggles, have you solve this issue? We have exactly the same issue. The region setting of my sandbox account doesn't seem to be working. It should be available to US only, but my sandbox account for Singapore can see the product. @@ Also, it can finish purchase with out issue...

Hello @Engineer I also experienced the same issue on iOS 17.7 device. Will you fix this issue for iOS < 18, I guess there are still many users stick on lower version.