I’ll look into this one tomorrow. I need my laptop! If I understand right, you’ve now two profiles. An old one with the old email and a new one with your new email.
If it’s ok with you, I’ll move your posts from this account over to your old account, change your old account email to your new email, make your old account password the same as your new account and then delete the new account.
If that’s all ok, let me know 👍