Hi there,
I'm a WordPress expert and working in a Web development firm for 4+ years.
After reading your project detail I've found that you need to fix 502 error on your WordPress website. I can do this within few hours.
My demonstrated records are in creating websites, WordPress, woo-commerce, PHP, Plugin config and API joining.
I am prepared to begin the task anytime.
Hope we will meet soon
Much obliged to you