grant.outofindex.com not working anymore for FusionAuth
I use the website as the usual way but encounter an error about "certificate has expired".
The certificates of both FusionAuth(auth-mobile-app-staging.loyalty-cloud.com) and grant.outofindex.com are pretty normal, 
Have no clue what could be the reason. 

![image](https://user-images.githubusercontent.com/6319967/138901982-7355b798-94b9-4a82-9008-ef7b4e4ca76e.png)
