Are you saving your work by clicking step 5 Save & Deploy in Edit Campaign?
If so, there might be a red alert in either the Settings or the Social Share step. Scroll down and see if there are any, they must be cleared before it will save.
Are you using Evernote Chrome extension? Please try disabling it or try a different browser to rule out an extension conflict if the above doesn’t work.
Still not saving? Please send a support ticket