Folders spontaneously emptied out Drobo 5N2

Hello, I am really alarmed to have discovered three folders with hundreds of files completely emptied out of their contents. This was certainly not done either deliberately or accidentally and appears to have occurred completely spontaneously. One smaller folder appeared empty on Drobo, 0 items, yet when copied to a hard drive the files appear. Yet no such luck with the other two folders with the most critical data. All three drives appear completely healthy, all green lights. What can I do, how can I recover the data? Will Disk Warrior help? The device is out of warranty and DroboHelp is seemingly not available in Europe.
thank you


i have the same issues here
Some folders are empty and in other folders there more files.
the files which are missed in one folder i can sometimes find in other folders. But its a mess.
Drobo should fix this issue imidiatly.