problem in template HTML

hey i recently but a template from element envato but i m noob in HTML
so i have two problem in the template
after iadded it to my shopify store and i upload product i see that when somone select a item mode or color the picture not showing up in product page
and also when item out of stock the availability still showing available !
here template link


here my store : shippedDrone.com
please help me to find soulution in HTML …