Why does my Sony experia Tablet not recognise my Canon EOS1200D

A

AC Question

I have connected my camera using the USB cables/adapters previously and had no problems but after 3months away I came back to download pics from my camera to my tablet and it doesn't even give me the option to download or view photos on the camera! I have turned the camera on and off a few times but when I try to search through settings on my tablet or camera I cannot find any problems ect..
Has anyone else had this problem or most importantly know how to resolve this?
Kind regards
Richard