Unable to Setup OpenID Connect Login

[JosephSia2]

I'm following the guidance provided to configure OpenID connect with Cognito at this (Set up OpenID Connect logins—ArcGIS Online Help | Documentation)

I successfully added the OpenID Connect Login the first time round. However, I had some configuration issues. I found that I was unable to edit the configuration so I deleted the OpenID Connect Login configuration.

Now, I'm find that I'm unable to add an OpenID Connect Login event though I'm using the same values. Instead, I encounter this.

There isn't much to go on. I created another User Pool in Cognito to test but to no avail. Has anyone encountered this before? 

[OlivieroVitale]

It's been a while. Any update on this issue?

The very same problem here.

Thanks

[Todd_Payne]

Having similar issue, I have submitted a case with ESRI.  Will update you if I find a solution.