Difficulties with loading plugins

[L i am]

Hi all, I have been downloading a few plugins (from sketchucation) but of late am having difficulty. The extension manager says they are "unsigned" and do not load. However if you look at my screenshot you will see Shapebender is unsigned but actually loaded and works! Bezier does not give me the option to uninstall but after repeated attempts to load it again will not load. I get "there is one extension that needs to be updated open extension manager to update. The only one that shows up that needs to be updated according to the extension manager is Artisan which works fine. I am getting confused, can anyone assist?

Cheers

[Pixero]

Check the settings at the top right corner.

[L i am]

Your a champ Pixero, thank you.