My iCloud Drive doesn't work

Question

I have the following problems:
1) Some files are shown in iCloud.com, but they are not shown in my iCloud Drive folder on my Macbook;
2) I can't delete folders from iCloud.com: I get an error (as the image shows);
3) Sometimes when I drop folder to my iCloud Drive, I get errors (such as: "xxx folder already exists") and the sync stops;
4) There's no feedback, and it consumes all of my CPU. I don't even know if it's really uploading files.
I want to downgrade to free 5 GB storage, but I'm currently using 9 GB and 5 GB were fine if I were able to delete folders.
PS: Yes, I have enabled iCloud Drive.

Answer 1

I don't know exactly how, but I got it working. I will try to explain, what I did.
1. I used the easybox as DHCP-Server an set the TC to Bridge Mode.
2. Then I gave the TC a fixed IP in the easbybox menu by using it's MAC-address (It seems that the address range has to be either 192.168.X.Y or 10.0.X.Y to make the TC accessable later).
3. I made the TC a DHCP-Server (DHCP only, not also NAT). The IP addess range of the TC starts after it's own IP adress (10.0.0.111) and ends at (10.0.0.250). The IP range of the easybox starts with 10.0.0.1 (it's own) and end with the TC's (10.0.0.111).
4. Then the Airport Utility told me that if I want to share an DHCP range the TC has to be set to a fixed IP setting, which I set up, leaving the IP-address 10.0.0.111 and the Router IP 10.0.0.1 (the easyboxs').
5. Then it worked in my case. Since I don't even know what I did, I'm not shure if it workes under other circumstances.
There are of course many variables. Such as the type of the router and the TC or the kind of the internet connection.