HomeKit invite showed my old AppleID

Good evening Tian29,

Welcome to the Apple Support Communities!

It sounds like you have a question about setting up an invitation for your spouse to join your Home. Which device did you send the invitation from? You may need to check the resources below to make sure none of your devices are associated with the "email addy 'A'" since you are just using it for sending email. It may be less confusing to create email addresses from "email addy 'B'" instead, since this is your primary account. Check the details of this account to make sure addy 'A' is not listed anywhere in your main Apple ID account.

Close the Home app and restart your devices to update any changes you have made to the Home settings, and to refresh the network connections. Then try sending the invitation to your spouse again.

Manage and use your Apple ID

View and remove your devices that are associated with Apple ID purchases (from "email addy 'A')

Share control of your home

If you can't access a home or accept an invitation in the Home app

If the issue persists after trying these steps, reply to this thread and we'll do our best to help!

Take care.