Pages amendments keep disappearing!

I keep losing changes to pages and work that has been added, saved and seen in the browser (other than the design environment).
In total I have lost possibly over 15-20 hours of work in total aa it does not just happen on this site. With standard WP you can see page revisions. Is there anyway to access/do this using Upfront themes? It is becoming increasingly frustrating, not to mention counter productive and a waste of valuable time.
Please advise as a matter of urgency!