Figma is saving, closing your app will discard changes

Hi. I made some changes to the Figma desktop but some changes have not been saved. Some aspects of the changes, text, frames, and comments are showing online but images while present in the layers are not showing on the page. It’s been in this state for over an hour and I cannot shut down the app because I get a warning that the changes I have made are being saved and these changes will be lost if you shut down. I was under the impression that this could not happen as the saved desktop work would sync to the cloud. I have left comments to the client that their requests have been completed. That comment has been saved but not my changes. So, I’m stuck in limbo with the prospect of my changes being lost (4 hrs work). Any advice would be appreciated.