Combining accounts

I have several ring devices at our home. My husband set up the account, but I am listed as an authorized user. He is currently hospitalized after brain surgery and is unable to communicate in any way at this time. Since I have added devices since he's been incapacitated using my own email, I'd like to combine our accts into one log in, showing my purchases and devices. we need to change the email address on the account and combine mine and his so the protect plan is properly chosen.