FTP LOGIN failed

Goodmorning everyone,
I have recently purchased a WD CLOUD EX2 ULTRA,
but I can’t interact with it via FTP access,
In the NAS settings under settings> network FTP access has been activated by me, in the Port forwarding menu both ports (20 and 21) have been configured and the same ports have also been opened in my modem
but when I connect through the FILEZILLA client it gives me the following error “Unable to establish data connection. ECONNREFUSED - Connection refused by server”

Also if I try to connect via FTP from the Windows Explorer included in windows it says “Cannot access the folder. Please verify that the file name is valid and make sure you have the necessary permissions to access the folder”

Could you help me?
Thank you in advance

You may want to see the dedicated OS5 subforum for the EX Series.

This subforum (My Cloud) appears to be primarily for a different OS5 supported My Cloud model, the single bay/single drive My Cloud model.

You should check out what i found out here about the O5
Also, remember that you need to enable FTP (Anonymous None) and NFS on the share.
If it’s not enabled, it won’t show up.