Moving folders into other folder cause to dissapear them

Hello I had some folders in my library with a lot of documents and references. To organize the folders, i created other folder and I dragged them into the new one. At the beggining they were accesible, but when i tried to access to them like 40 minutes after I done this, they were gone. They don't appear neither in Desktop app or Web. What can I do? I have refreshed like 100 times already.