My cloud has been reset unknowingly and all files have vanished

I started a few notebooks on Anaconda Cloud when I had problem installing the app in my computer. After I could install it to my computer, the two were not synced and somehow today when I tried opening the link to the most important notebook, it has vanished. After several times trying, 2 notebooks appeared, but the two most recent and the one I am working in has totally disappeared together with some raw files I loaded into the cloud before. I don’t know what to do with it.
Here is the link to the previous notebook:
Now if you open it, it will automatically load to a blank one. It is quite important as I have been developing it for the past few days and I really don’t know how it vanished into thin air.
If possible, please help me with it.

That is temporary. Try again now.