No worries! Hopefully we can figure this out for you. 
I initially suspected that the state of your app may have been overwritten by a faulty save, but that doesn't seem to be the case after my initial investigation. There is little to no change in its size between the edits made on 4/21 and 4/28, which line up well with the times you mentioned working on the app. Can you try reverting to a previous state in the app history once more, just to confirm that the error you're seeing is consistent? If that doesn't work, you can also try reverting via the _historyOffset URL parameter.