Mionet - what to replace it with for remote access?

I realise MioNet is being retired. I have a My Book World Edition white light version. When MioNet stops, how can i access this remotely? Thanks

Hello and welcome to the WD Community.

As of now, WD does not have another application for this unit. As a recommendation, you can try setting  the drive to use FTP.

I have done that but the My Book does not want to allow access. I use FileZilla FTP. It will connect to the My Book and the user / password are accepted. But then the following errors:
Status: Connecting to…
Status: Connection established, waiting for welcome message…
Status: Connected
Status: Retrieving directory listing…
Command: PWD
Response: 257 “/”
Command: TYPE I
Response: 200 Switching to Binary mode.
Command: PASV
Response: 227 Entering Passive Mode (87,112,19,156,19,206)
Command: LIST
Error: The data connection could not be established: ECONNREFUSED - Connection refused by server
Error: Connection timed out after 20 seconds of inactivity
Error: Failed to retrieve directory listing

This is while connected on the same network. I tried after enabling FTP on the My Book to do this remotely, got the above errors and wanted to validate that everything was working locally before trying remotely again.
BTW FileZilla set to:
FTP (not SFTP)
only use plain FTP (insecure)
(had also tried the default Use explicit FTP over TLS if available)

How can I get FTP to work? Thx