Hello Friend,
I have gone through your project requirement, i have understood the work, you need a PHP developer who is familiar with prestashop. Yes, I have. you need to fix a CSS issue on a responsive prestashop website also you want to add a phone number field as one of the required fields for customer registration. also its needs to be editable through Admin backoffice. and third point you want to fix the display of Facebook plugin button on Create an Account Page.
Please provide me Your website Link and also provide me all details, so i will start the work, i will complete this task aprx. 1 or 2 days.
We are a 10 year old IT company with highly skilled designers and developers to work on php, Mysql, Jquery, Wordpress, OSC, prestashop, Magento, OpenCart, Mobile development, iPhone, Responsive etc.
It would be better if you come to have a close discussion over chat .
Best Regards
Harpreet Singh