App hangs on the loading screen for minutes while a subscription is active (iOS)

After confirming an annual purchase, the app stopped opening - the loading screen stayed up for as long as six minutes, repeatedly, roughly twenty times in a row. Force-closing the app and restarting the phone made no difference. When it did eventually open, making edits and then closing it brought the hang straight back.

The strongest clue is the timing: it began the moment the subscription activated, and stopped completely once the subscription was cancelled the following day. It has not recurred since.

Also reported alongside this: the app freezing after each addition to a sublist.

iOS, signed in with Apple. Reported August 2026.