Hello. I'm looking to make voluntary NI contributions as I'm living abroad. I have been for 4 or 5 years. I've previously filled the form out and sent it off. They did not return the form (maybe it got lost in the post) and the direct debit didn't get set up, I know they received my forms as a friend posted them in the UK and my details were correct up to date online. I have no idea what happened and why the direct debit didn't go ahead. Can anyone help as I'm unsure if I ticked the right box. Do I want to pay NI class 2 or class 3? Maybe this is why it got rejected? I just wish I could do this all online as posting from thousands of miles away amd waiting for a letter which may not even arrive is ridiculous. Does anyone know of a way to get my missed payments bill sent online?