Cape Cod Lighthouse 1 Piece Wrapped Canvas Painting

Hi, I ordered this canvas 2 years ago. It was expensive but I loved the picture and still do. Unfortunately, I have not been able to display it on the wall as it was difficult to hang and did not fit flush to the wall due to the wooden frame it was mounted on being of poorly put together. I did not return/complain at the time as I had too much going on personally and thought I could perhaps sort it myself if I got the time. As it is still in a cupboard, I recently revisited it to see how I could hang it to the wall. Out of curiosity I looked at your website to see the canvas and there is an image of the canvas of the back with what looks like adjustments to the wood frame and also metal attachments to put string through to hang. I am now wondering if mine was a design flaw and that I should have sent it back at the time. Any suggestions?