Matt D. generally I wouldn't necessarily be worried as an anonymous user can only read (view) your sitemap/wireframes. Have you generated any share links and passed them around at all? Have you reached out to support for any reason at all or? If you want to DM your Relume account email, I can do a little bit of digging on my end and if you are truly concerned, I can ask the team if they've accessed your account at all.
Aside from that, it would be shocking to me if bots or users were able to randomly access your project.
Oh, another tip - if you truly want to keep things under wraps, you could actually just disable read-only access. Under the share button, just toggle this to no access.
