I am looking for an upsell solution that allows my website to offer additional products on the product page (preferably before adding to the cart button). Just like this old version of my website (OpenCart v1.5.6) http://cdracks.com/model-108-4-bookcase
The extension used on that current newer website (OpenCart v220.127.116.11) is no longer being made: Options Quantity for select and checkbox option type https://www.opencart.com/index.php?rout ... n_id=12116
I need this functionality for my new store but have no clue as to what extension or configuration might help me achieve this. I have been looking around for hours, but just not sure which configuration or extension might make this work.