All Setups/Projects/Kits/Patterns... disappeared

Hi,
I am using Elektron Rytm Mk2 since a couple of years on a regular basis.
Today, after I switched it on, I quickly noticed that something was not looking right and all the work I had saved (Projects, patterns, samples…) was not available on the machine anymore.
It seems all memory has been wiped out. When looking at the settings, all the Ram and Drive seems to be 100% free.
The last time I had used the machine (yesterday), I was simply running tracks in Cubase. I did not do any change on the Rytm itself.
Any idea of what could have happened? Any way to get the memory back?

Any help would be much appreciated
Thank you
C