Thank you for bringing this to our attention via the Hello Peter website. We appreciate that you have made us aware of the issues that you have experienced.
There is a fix for this problem. In order to rectify this, you would need to restore the device. Please ensure that you back up all your information before proceeding with this option. You can back up via iTunes or iCloud.
Once you have successfully backed up your device information, process the "restore" on the device. After restoring the device, the iPad will restart on its own. When it restarts, it will offer the option for you to accept carrier settings. Please reject. Click "NO"
Once this is done, you will be able to access personal hotspot without this issue and you can then restore from your backup.
Apologies for this.
Rest assured, it is not our intention to displease you. We look forward to improving on the service delivery to you.
MTN Service Provider