I have subscription for Microsoft Office 365 but in meantime I change domain and now Office doesn't recognize me. How I can recover subscription?

For a Microsoft 365 for home subscription, recovery depends on where the subscription is billed and which account is tied to it.

1. Check whether the subscription is still active on the Microsoft account used to buy it:
   • Go to Services & subscriptions.
   • Sign in with the Microsoft account associated with the subscription.
   • If the subscription appears there, Office should be activated by signing in with that same account.
2. If the subscription does not appear, verify whether it is managed by a third party:
   • If Manage, Cancel, or Change payment appears on the subscription page, billing is through Microsoft.
   • If those options are missing or limited, the subscription may be managed by a third party such as Apple, Google, Amazon, or another retailer.
   • Third-party subscriptions must be managed with that provider directly. Microsoft cannot cancel, refund, or modify billing for those subscriptions.
3. If the issue started after changing to a different account or domain, confirm the correct account is being used in Office:
   • In an Office app, open File > Account and check which account is signed in.
   • Sign out and then sign back in with the Microsoft account that shows the active subscription on the Services & subscriptions page.
4. If the Microsoft account email or password is no longer available:
   • Use the Microsoft sign-in helper to identify account issues and recovery steps.
   • If sign-in still cannot be restored, contact Microsoft Support.
5. If Office still shows subscription notices after renewal or purchase:
   • Check the subscription expiration/renewal status online.
   • If a boxed or card purchase was used, the product key may still need to be redeemed before the subscription becomes active.

If the subscription was changed from one domain to another in a work or school organization, that is a business account scenario. In that case, the assigned license should be checked in the organization account at My Account, and if no license appears, the Microsoft 365 admin must update or reassign it.

References:

• Where can I manage my Microsoft 365 subscription? | Microsoft Support
• Microsoft 365 subscription features aren't available in Office apps | Microsoft Support
• Problems renewing a Microsoft 365 subscription | Microsoft Support
• A subscription notice appears when I open a Microsoft 365 application | Microsoft Support