Hello there,
Sorry little confusing description you have gave but as far as i understand you wanted to say that add to cart and checkout is not working properly right ? well i can look into it just need to ask few questions and then we can start work.
I have 3 years of experience in web development and have worked on various skills that required for web development like,
1) HTML, CSS, Javascript for front end development
2) PHP (Laravel and Codeigniter framewrok) For Backend development
3) MySql For database
So if you choose me for your work then i can promise that i would work in future at a price that will be in your budget, with High quality work, If you do not like my work in delivery then don't pay me and we can move on , there would not be any demand.
P.S. I am looking forward to work with you on this project and in future projects.
Thank you,
Ridham Sabhad