Unable to connect to the server-FileZilla

Friends. An error occurred when connecting via FTP :

"Status: Connection failed with "ECONNREFUSED - Connection rejected by server". Error: Unable to connect to the server Status: Waiting for replay... "

Moreover, the first time it was possible to connect, but then the connection was interrupted and now it is not possible to connect.

I checked all the data repeatedly, everything is correct, I tried an active \ passive connection, there is no antivirus, the firewall is turned off, I tried again through total commander and WinSCP also fails to connect.

What could be the problem? I will be very grateful for any help.