Retool Public URLs getting flagged by Outlook and getting Authentication Failure. Missing Access Token error

This is happening to a few people who are getting emails with URLs to public Retool apps:

This may be two issues but some are getting the message, Authentication Failure. Missing Access Token:

Actually, I am getting the same error when going to the web site from a Chrome logged in (to the browser, not Retool) as a different user.

I am not doing any authentication with OATH, SSO or such on this page.

Edit: If I Duplicate the app and make it public, the dup works - no error.

Hey! Just want to post here for other folks that may run into something similar. Some time ago a particular group of users had abused Retool public apps for a phishing scam which may have led to public URLs being marked as unsafe. The team is looking into it and we can report back here when it has been resolved.