Fix image display on Opencart website

We have an Opencart V2 website that use Journal2 theme and a plugin called Pitchprint. Pitchprint generates custom images for client designs online and we need these displayed in the item pics on Opencart. We had this mod done about 2 years ago and its working correctly on www.stickerstudio.com.au. The issue is that the Pitchprint developer has upgraded their software from V8 to V9 and the site no longer works correctly with the mod we had done 2 years ago. We need this fixed. Mini-cart, cart and checkout images need to update live, links in mini-cart, cart and checkout need to be accurate, customer logged in view and admin view need to display correct images. Re-order button in customer account order history needs to work. Edit needs to be via VQmod or to edit existing [login to view URL] mod file. We want work done on dev site at [login to view URL] so we can simply copy edited files to live site when ready. Please be aware knowledge of Opencart and Journal2 theme are essential, we have had several programmers who could not complete the task, make sure you can complete the job before making an offer. Main thing is that it is primarily to do with the Journal2 theme, it changes the way the images are displayed in Opencart and this is mainly what the fix is for. The functions can all be seen online live at the links I have provided. the "customise now", "edit current design" and the "create new design" buttons need to function as on the [login to view URL]