From/Sender email not using Return Path

Hello,
Thank you for this excellent plugin.

When I tick the box for ‘Set the return-path to match the From Email’ this doesn’t change the Sender email address that the recipient sees in their inbox.

I am using OAuth2 with Google and it shows my business account email address instead of the From email address associated with the website.

Is there anything I can do to hide my own business account and replace it with the website email address?

Thanks,

John.