SubZero

Hey guys I'm experiencing an issue where I'm unable to load or continue any saved campaigns I make and it's beginning to become rather annoying as I'm unable to see a campaign through to the end. Is there any way of being able to fix this issue? I've tried uninstalling and re-installing numerous times and nothing seems to make a difference. Game is also fully up to date. Any advice would be appreciated on how to solve. There is currently campaigns saved but from the below screenshot you can see the button is unable to be clicked. Help! Andy