Ispconfig 3: Error: Authentication failed. Error: Critical error Error: Could not connect to server
<p>I am using ispconfig, and I have created a FTP user with the respective password. But when I try to connect to that server I hm experiencing this error.  </p>

<pre><code>Error: Authentication failed. 
Error: Critical error 
Error: Could not connect to server
</code></pre>

<p>I tried all the solutions given <a href="https://ma.juii.net/blog/fix-ispconfig-ftp-logins" rel="nofollow">Here</a>, but to no avail.</p>