Cannot acces Mycloud with Mac Yosemite

I have a problem with my Cloud storage as i cannot access from Finder to my
storage. It works fine with the cloud app but from finder it doesnt connect.
i am using Yosemite

Every time i try to connect this msg pop up.

“there was a problem connecting to the server …”
“The server may not exsist or it is unavailable at this time.
Check the server name or IP address, check your network connection, and
then try again.”

It is strange as i didn’t have the problem before. it seems it has happened after i started added some folders, files and users.
anybody any idea what to do?

thanks
Svdputte

Check the server name or IP address, check your network connection

Did you check the IP address? If you’re using DHCP, your router may have decided to allocate a different address. Admittedly, your DNS should be resolving the name into an IP address, but it depends where your DNS is; first port of call ought to be the router, but who knows what Apple do…

AFP service switched ON in network settings of the MyCloud?