How do I know how many confirmations a transaction has?
As you can see at the bottom of your screenshot, or on any block explorer similar 
(https://blockchain.info/tx/2daf1bea238137e5db00cd12074a93f181bf86a759f1963fd92197671f32a463),
you can see that it has 84 confirmations as of the time of writing, well over the 4 you said was needed.