Cloud access not working

My Cloud OS 3 Personal & Network Attached Storage My Cloud
10

Dude, you’re not paying attention. The “Relay” status to which you refer is ONLY relevant to cloud access. It has NOTHING to do with FTP, nor does the port configuration within the Cloud’s UI. If you want to forward ports for FTP, it’s all up to you. You have to forward to ports 20 and 21.