The challenge requires me to block all users' access to the Salesforce1 for iOS app or the Salesforce1 for Android app. Under my connected apps i can only see "Salesforce for iOS" and this was the one I blocked. I have verified that my Salesforce1 app session has been revoked.

When I submit my challenge it gives the following error:

"It doesn't appear that you've blocked all users' access to either the Salesforce1 for iOS or Salesforce1 for Android app. Please check again."

How can I get around this error? Would the fact that my connected app is simply called "Salesforce for iOS" (missing the "1") have anything to do with it?

The task requires that you block OAuth access to both Salesforce1 for Android and Salesforce1 for iOS.  Yet in the Connected Apps OAuth section these apps are not listed.   As you can see from the images, I have the Admin App installed to controll the apps, and there is nothing in the Connected App section.  Any help is appreciated.