I need a mycred plugin specialist

there are two add-on one sell content and another spin wheel sell content ask user to pay before they can access the post spin wheel award users points when they spin the wheel now i want user to pay before they can access the wheel so i think of adding the spin wheel shortcode in a post and then trying to sell it via sell content feature but it doesn't work first error is spin doesn't load Error : Updating failed. The response is not a valid JSON response. second is the sell content feature doen't work when i put mycred spin sheel short code in the post you just need to fix this why the sell content doesn't work with spin wheel shortcode and why spin wheel doen't load i can give you acess to a website if you want