Embedded reports for shared data all of a sudden began asking for login

Embedded reports for shared data all of a sudden began asking for login

I've had reports embedded into my website for years. All of a sudden, the reports are no longer showing, but a login request is showing in their place. I logged into Zoho and checked, and everything is still Shared. They appear fine when I'm logged in, but as soon as I'm logged out, the login request appears again. What changed at Zoho?