Can I use a portfolio or social profile that does not show my legal business name?

You can use a social profile or another link that shows your work. If that page uses a brand, username or personal name that differs from the application’s legal name, explain how it belongs to you or your business.

Use a link the reviewer can open and pair it with genuine business records if requested. Do not claim somebody else’s work as your own. If the page cannot establish the connection clearly, give a written description and ask support what extra evidence is needed. Acceptance depends on the review, not merely on the page being publicly visible.