icloud

Hello all,

i am facing problems with iCloud, it shows me that there is not enough free space. I took a look on my phone, it shows me that I have used 4.7 GB of 5 with documents??? I really can't find these documents, also it is not possible to delete them via phone. where can I find these documents and free up some space? I was on iCloud.com, there is nothing ... also tried it via MacBook, still the same, empty folders but it still shows me that I don't have enough free space. I cannot use applications, please help