@bradseward
You can certainly use a different community account to contact customer support. Use private messaging rather than the chatbot as you would probably go around in circles a few times with verification.
Did you forget the community account username? Or the password? Or both? Did you ever post with it in the community? Unless you had important info saved in your private messages or significant stats etc....that you really want to keep or recover then gaining access to it since you already need to change the email address of your self serve account may not be necessary? You might as well just create a new community account using the new email address (unless you already have with this account).
Presumably once you verify your self serve account and confirm the current email with the CSA they could locate the associated community account. At that point I'm sure there is a process where they can change both emails at the same time or reset the password or something along those lines similar to the process when a customer forgets their login credentials for their self serve account.
The community account email is easily changed by the customer (in your profile if you have access to your community account) it just can't be an email currently used on another community account (you can't directly swap emails you need a placeholder email to do so). Only a CSA can change your community account's username.
If you end up creating a new community account and username try to avoid using personal details like your full name, phone number etc....or certain slang terms or even innocently suggestive nicknames as a few Richards have found out I'm sure?!!
I hope this helps....?🤔
