I\'m currently trying to add IAP to an existing App. To that end, I\'ve added some products and created some test users. The products are recurring subscriptions. The dev
You can't really manage subscriptions in sandbox, but as Jean-Paul de Ville de Goyet found out on Apple Developer Forums:
1 month subscriptions auto-renew every 5 minutes. So far so good. They auto-renew 5 times and then they stop, so after 25 minutes you'll get the 21006 error. However even when repurchasing the same subscription it will NOT auto-renew again on the same test account since it has already auto-renewed 5 times. So if you want to test renewal and you have been messing with these subscriptions for a while you need to create a new itunes connect test user. This is very annoying honestly and it would be a lot easier if we could just reset the entire purchase history of a test user account.
I tested my subscriptions the same way.