Microsoft 365 features that help users manage their subscriptions, account settings, and billing information.
The subscription purchased through third party store is not managed by Microsoft. When the purchase is made through the Apple Store, all management (payment, status, activation, and support) is the responsibility of Apple Store support, and Microsoft does not have internal access to view or fix these subscriptions.
As stated in the article below:
https://support.microsoft.com/account-billing/manage-your-microsoft-365-subscription-purchased-through-a-third-party-44749f45-4c0b-5d41-a73f-7634b8d2a763