Have you tried doing a factory reset? Try doing this under the settings menu, which should clear up any issues & then you can try to download your desired apps again.
You will need to do a factory reset on the device. This should clear up this issue & then you should be able to download the Candy Crush application again afterwards.
"Some" of the 2013 Models will, Most tablets will not...You can buy an Insert that has a Magnetic tip on the end, The cord has another magnetic tip. Simple stick together. It all depends on the type of charger Male end that goes into that paticular Model....
You might have to call Google to have it unlocked but the other option is to wipe the tablet clean of all it's data and install a custome ROM by unlocking the boot loader.