Can you confirm the following:
1) The provisioning profile uses a wildcard bundle identifier, e.g. com.telerik.*
2) The provisioning profile you used to sign the AppManager mobile app has a fully qualified bundle identifier, e.g. com.telerik.appmanager, and you are using this profile for the AppManager app only. If you used it for another app that is already installed on the phone, iOS will not install the AppManager app.
If the problem persists, I advise you to create a new AppID in your Apple Dev Center and then a new provisioning profile and use this profile for the AppManager app only.
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