Complex sentence: On September 17,2015, crowdfunding resumed using the online payment system PayPal, and by 2016 "Shenmue III" had raised a total of over $6.5 million USD from over 71,000 backers.
Split into simpler sentences: On September 17,2015, crowdfunding resumed using the online payment system PayPal. By the end of 2015, "Shenmue III" had raised a total of over $6.5 million USD from over 71,000 backers.