Secondary User: Can't Access xFi to change password

My email is associates with 2 different account numbers for different addresses. I am a secondary user on one and a primary user on the other. I am trying to log into xFi for my current primary address, but It's taking me to the xFi page for the other address and telling me I don't have the privileges to make changes.  How can I unlink an account number from my email and log into xFi at my house to change wifi passwords and set up port forwarding. Should I just make a new account and transfer admin privileges to it?