The Digital2 Platinum Pad 9 is an Android tablet with dual core processor, 1 GB of Ram, 8 GB of storage and a 1024x600 HD display. And is equipped with cameras, front and rear, with micro USB ports, head jacks and a micro SD slot.
First I would try to clean the button area with dry clean cloth or cotton swab. This is because dirt and grime can build up and cause the buttons to stick.