membership plugin

I created a subscription page as per the plugin..

When i go to that page & if a user is already subscribed , it simply gives message “You currently have a subscription for the Members Section subscription. If you wish to sign up a different subscription then you can do below.”

I want the user to be able to cancel subscription from this page if the user wishes to as well as modify above message displayed..

Isnt that possible ? How do it make it possible ?

Also, i want to remove the coupon thing that appears on this page..