Opencart module repair

DO NOT WASTE MY TIME IF YOU ARE A NOT A CODING / OPENCART EXPERT! Read carefully before you bid, I won't award project to blind bidders! I have a payment module that needs to be fixed. 1- One line error during checkout process 2- Voucher and sale code % won't pass to payment gateway's page Analyse the module in attachment. I am fed up with scammers and money beggers so don't bid and constantly change your price. My budget is ONLY 80€ because it is a simple job. Simply do not bid if the budget is not suitable for you.