after I added an App Groups in XCode it shows up an warning symbol (Add the "App Groups" entitlement to your App ID and Add the "App Groups containers" entitlement to your App ID). Before the warning there was a loading spinner like that:
after it finished the loading I got the following warnings:
What can I do to correct the two wrong steps? If I'm right it is already added to my App ID.
I faced the same issue, and in my case my apple id did not have the permission to add the "App Group".
If your account's type is "Member", not "Agent", then you need your Agent/Admin who has the main development account to add the "App Group" for you.