CPanel Domains vs. Add On Domains difference

They are just different views. Domains show all kind of domains (alias, sub, add on) in one place while the Add On domains panel only shows add ons.

Adding Putty SSH key to Github

If you get an error then try this:

Here are some steps that are not at all clear when copy/pasting your public key. (For the record, I used Putty Key Generator for my keys.)

• On the first line, enter ssh-rsa.
• Make sure you add one space after ssh-rsa
• When you copy/paste the key into the Key textbox it should preserve the \n characters (x0A). If you are using Notepad on Windows, you won't see these new lines until you copy the text to Github.

Notice on this screenshot, there's a space after ssh-rsa (See the cursor.) The public key text also includes three \n characters, so you can see the public key text bumps down to the next line three times in the textbox.

source: https://stackoverflow.com/a/17051410