Hey James -- I think this is more of a technical issue from the account settings of your client. If you have already set up a verified sending domain, then the second part <bob@convertkitaccount.com86> should not be there anymore. You might need to reach out to ConvertKit support so that they can take a further look into it. You can reach them here: https://convertkit.com/support46

Robert
Free Diver | Adventurer