Thank you for letting us know about this. Our developers are currently working on the 'Hide All Apps' feature for iOS which should be released later this month, which will enable the ability to block and unblock all apps.
In regards to having issues with the quick time changes for specific devices, ideally this should not take more than about 1 minute to be pushed out to said devices.
Could you please ring us on 1300 398 326 so that we can do some live troubleshooting with you over the phone and get this issue resolved? This would be greatly appreciated.
Thank you and we look forward to hearing back from you.