Office 365 - how do I fix a duplicate problem

The problem arises because you currently have two separate Microsoft 365 tenants: one previously provisioned through GoDaddy and another associated with your new Microsoft 365 Personal subscription. The Office applications, such as Word, are still attempting to authenticate against the former GoDaddy tenant, which has already been decommissioned.
To resolve this, you will need to remove all references to the old GoDaddy account from your Office applications and Windows credential store. Once those cached credentials are cleared, sign in exclusively with your active Microsoft 365 Personal account. This will ensure that Word and the other Office applications properly recognize and activate against your current subscription.

Moved email from GoDaddy Office to directly with Microsoft...Now I have Tenant Issues - Microsoft Q&A