Levels dont save!

Ill spend close to an hour on a level in survival then pause it and close out of the app and when I come back the progress is not saved..... Does not happen all the time... Basically have to plan on never closing the app until a level is completed! When your up to level 30s + it can take over an hour just to complete a level ..... So far Ive wasted countless hours and got no where because of the save glitch.... Im about to give up....

njthom about Modern Conflict™, v1.2.2