Ftp connections work with firezilla, NOT directory opus

Here is the log from firezilla which was installed only for testing. I bought this program from awesome gpsoftware so i didn't have to use something else.

Status: Connecting to 192.168.7.27:21...
Status: Connection established, waiting for welcome message...
Status: Initializing TLS...
Status: TLS connection established.
Status: Server does not support non-ASCII characters.
Status: Logged in
Status: Retrieving directory listing...
Status: Directory listing of / successful

This is connecting to a proftpd server

The below is with a site saved in the ftp address book:

site name: dns1
connection: standard
username: ftpuser
Password: "saved password"
initial directory:
{{Network tab, rescan directory after change ON, Use PASV (passive) mode ON}}

Opening Connection 192.168.7.27:21
220 ProFTPD Server (PROftpd) [192.168.7.27]
550 SSL/TLS required on the control channel
Connection closed

Below is with all the same settings EXCEPT
connection: SECURE TLS EXPLICIT (AUTH TLS)

Opening Connection 192.168.7.27:21
220 ProFTPD Server (PROftpd) [192.168.7.27]
234 AUTH TLS successful
SSL_connect error 1
TLS/SSL connection to server failed!
Connection closed
** Cannot establish SSL Connection.

Both methods fail using DOPUS. Only sucess is with firezilla quickconnect.

I found something that seems similar to the problem you are experiencing.
https://serverfault.com/questions/934976/connecting-to-a-ftp-by-tls-fails-from-one-client-but-succeeds-from-the-other .
At the bottom of the answer there is a link that may help you test your site URL for more specifics .

Still no sucess with DOPUS.

Are you sure port 21 is correct? That's normally the port number for ordinary non-encrypted FTP.