Facebook thinks Unity webGL is in Adobe Flash?

We have two games in webgl built on 2018.2.8. Both our games are bringing up this message when our players go to play it.



This seems to suggest the game is in Adobe flash...but it's built in Unity WebGL. We're probably going to try updating to a newer version of Unity, but I'm hopeful that there is a simpler solution. And I'm very confused why it claims we're in Adobe Flash.

 

https://www.facebook.com/fbgaminghome/blog/important-changes-to-gameroom-and-web-games-on-facebook

You have to put off at "redirect to app/page" in the general settings of your app.

 

Thanks, I must have missed that change.