Subscriptions with Google Play Billing Library Purchases list is empty

I'm trying to implement subscriptions in my app that is using Google Play Billing Library using Meta Horizon Billing Compatibility SDK. I am able to retrieve list of all subscriptions, however when I try to test purchase one of the subscriptions the purchases list is empty.

When I call function

billingClient.queryPurchasesAsync

 I've got 

billingResult.responseCode == BillingResponseCode.OK