What happens after 12 renewals? Does the subscription expire completely? The next day when I try to manage settings for my sandbox account it says it cannot connect.
I cannot see the status of subscription in: Settings-> App Store -> Sandbox Account -> Manage
Logging out and logging in of my regular account does not fix that.
When I login with a different non-testflight sandbox account I can finally edit those settings. There are some missing details in documentation explaining testflight sandbox accounts. Do these accounts stop working after 12 auto-renewals? I need more specific details in order to ensure subscriptions will work properly during production.