Where is the Add On menu?

Just purchased a developer license and have the plugin installed and activated.
I've been watching a video tutorial on creating a member site with GF - the tutor activates the "user registration" add on by first going to the "Add On" menu from the dashboard.
Only problem is I don't have "Add ons" listed as a menu item - I am presumably supposed to as I purchased the developer license. Can someone help please as I can't see how I am supposed to get add ons otherwise. Thanks!

Thanks Richard, that's exactly what I'm doing but it's not there!
I have got "Updates" and immediately under that is "Help"
I've installed GF on multiple test sites and it's the same on each one, there is no Add Ons section.

Also, I just managed to download the User Registration add on and uploaded it manually. It is now appearing as a listed item in the menu but still there is no Add Ons section. Besides this it doesn't seem to be working properly! When I initially click on User Registration I am taken to a section which contains a button to "Add New" user registration form. When I click on this however I get an almost blank pages which says "User Registration Settings" at the top and which has a drop down with only one item in it which simply says "select a form" - There is no way to select anything on the page and nowhere to go from there.

Any further ideas?

Have I perhaps been given the wrong license?