FileZilla can log in but can not read file list from ftp server.
Status: Logged in
Status: Retrieving directory listing…
Error: Connection timed out after 20 seconds of inactivity
Error: Failed to retrieve directory listing
Solution one: changing from passive mode from active mode or inverse.
Try solution two, if the first one doesn’t work.
Solution two: for encryption connection, if you choice is “use explicit FTP over TLS if available” as shown below, You can change it to “only use plain FTP (insecure)” and reconnect.