ftp will not connect

I've connected dozens of times with limited issues.
This morning, it simply will not connect. Log below.
I've checked with my IP, I've double checked (tho I've not changed) my user name and password. All are OK.

What do I need to do to connect? (warning - technically deficient here - use of simple terms and first-grade instructions appreciated )

SmartFTP v1.5.990.2
Resolving host name "ftp.wizzyandfriends.com"
Connecting to 69.57.175.18 Port: 21
Connected to ftp.wizzyandfriends.com.
220---------- Welcome to Pure-FTPd [TLS] ----------
220-You are user number 5 of 50 allowed.
220-Local time is now 13:29. Server port: 21.
220 You will be disconnected after 15 minutes of inactivity.
USER wizzy
331 User wizzy OK. Password required
PASS (hidden)
Timeout (20s).
Active Help: https://www.smartftp.com/support/kb/74
Client closed the connection.
Cannot login waiting to retry (30s)...
Continue to login attempt 2...
Resolving host name "ftp.wizzyandfriends.com"
Connecting to 69.57.175.18 Port: 21
Connected to ftp.wizzyandfriends.com.
220---------- Welcome to Pure-FTPd [TLS] ----------
220-You are user number 6 of 50 allowed.
220-Local time is now 13:30. Server port: 21.
220 You will be disconnected after 15 minutes of inactivity.
USER wizzy
331 User wizzy OK. Password required
PASS (hidden)
Timeout (20s).
Active Help: https://www.smartftp.com/support/kb/74
Client closed the connection.
Cannot login waiting to retry (30s)...
Continue to login attempt 3...
Resolving host name "ftp.wizzyandfriends.com"
Connecting to 69.57.175.18 Port: 21
Connected to ftp.wizzyandfriends.com.
220---------- Welcome to Pure-FTPd [TLS] ----------
220-You are user number 7 of 50 allowed.
220-Local time is now 13:31. Server port: 21.
220 You will be disconnected after 15 minutes of inactivity.
USER wizzy
331 User wizzy OK. Password required
PASS (hidden)
Timeout (20s).
Active Help: https://www.smartftp.com/support/kb/74
Client closed the connection.
Cannot login waiting to retry (30s)...
Continue to login attempt 4...
Resolving host name "ftp.wizzyandfriends.com"
Connecting to 69.57.175.18 Port: 21
Connected to ftp.wizzyandfriends.com.
220---------- Welcome to Pure-FTPd [TLS] ----------
220-You are user number 8 of 50 allowed.
220-Local time is now 13:32. Server port: 21.
220 You will be disconnected after 15 minutes of inactivity.
USER wizzy
331 User wizzy OK. Password required
PASS (hidden)
Timeout (20s).
Active Help: https://www.smartftp.com/support/kb/74
Client closed the connection.
Cannot login waiting to retry (30s)...
Continue to login attempt 5...
Resolving host name "ftp.wizzyandfriends.com"
Connecting to 69.57.175.18 Port: 21
Connected to ftp.wizzyandfriends.com.
220---------- Welcome to Pure-FTPd [TLS] ----------
220-You are user number 10 of 50 allowed.
220-Local time is now 13:33. Server port: 21.
220 You will be disconnected after 15 minutes of inactivity.
USER wizzy
331 User wizzy OK. Password required
PASS (hidden)
Timeout (20s).
Active Help: https://www.smartftp.com/support/kb/74
Client closed the connection.
Cannot login waiting to retry (30s)...
Continue to login attempt 6...
Resolving host name "ftp.wizzyandfriends.com"
Connecting to 69.57.175.18 Port: 21
Connected to ftp.wizzyandfriends.com.
421 Too many connections (8) from this IP
QUIT
Cannot login waiting to retry (30s)...
Server closed connection
Continue to login attempt 7...
Resolving host name "ftp.wizzyandfriends.com"
Connecting to 69.57.175.18 Port: 21
Connected to ftp.wizzyandfriends.com.
421 Too many connections (8) from this IP
Cannot login waiting to retry (30s)...
Server closed connection
Continue to login attempt 8...
Resolving host name "ftp.wizzyandfriends.com"
Connecting to 69.57.175.18 Port: 21
Connected to ftp.wizzyandfriends.com.
421 Too many connections (8) from this IP
Cannot login waiting to retry (30s)...
Server closed connection
Continue to login attempt 9...
Resolving host name "ftp.wizzyandfriends.com"
Connecting to 69.57.175.18 Port: 21
Connected to ftp.wizzyandfriends.com.
421 Too many connections (8) from this IP
Cannot login waiting to retry (30s)...
Server closed connection
Continue to login attempt 10...
Resolving host name "ftp.wizzyandfriends.com"
Connecting to 69.57.175.18 Port: 21
Connected to ftp.wizzyandfriends.com.
421 Too many connections (8) from this IP
Cannot login waiting to retry (30s)...
Server closed connection
Continue to login attempt 11...
Resolving host name "ftp.wizzyandfriends.com"
Connecting to 69.57.175.18 Port: 21
Connected to ftp.wizzyandfriends.com.
421 Too many connections (8) from this IP
Server closed connection

Hello ..

Try to increase the timeout to 60 seconds in the settings (Menu: Tools->Settings->Connection).

If it still doesn't work please contact your web hosting provider to make sure everything is okay with your account. Also verify the user name/password with them.

Regards,
SmartFTP