Restricted APN settings

Hi, disappointed to learn that mtn have recently after visiting the MTN Pavilion store activated restricted APN settings and due to this I have recently been unable to access my cctv cameras from my phone app on mobile data. I was told there is no way around this. Is this true? Can you help perhaps give me any insight as to why this has happened? Apparently gamers are also having a problem due to this. Unsure as to reason but I will be forced to probably change service providers due to this.Am sure other customers will probably be contemplating the same.