Thank you for the response, @MrVapor Joe.

I can't get past step 1 (Edit the wp-config.php for your website) because whilst doing via Managed WP, nothing happens at Step 3 in this guide: 

3) For the website you want to use, click the three-dot icon and select Settings.

 https://www.godaddy.com/help/upload-files-with-sftp-8940

 

Nothing happens when I select settings.