Adjustments on Prestashop 1.7 based website

hi, i'll launch my prestashop 1.7 based website the 14/02. I have some little bugs to fix that i can't resolve myself and i need help. I'm not a developer but i have some skills, i know what is possible or not. I need a specialist able to edit code inside prestashop source code (PHP or SMARTY. Maybe mySQL). Template: At Julia Fashion (Leo's Themes) Some examples to do: * work on some adjustments for mobile design aspect * change payment preference order * find why i can't have any email notification from my integrated blog * add button to go back to the main category inside a product page * change some words which are not good translated This list is not complete, some bugs are very quick to fix, i think i have a dozen of bug to fix. I will privilege single freelancer, my budget is already fixed, i don't work to work with a company, but with someone i can ask in the futur for others adjustments. Regards, Pascal