Hello Sir, the project description does not cleary describes the problem you are facing on the product page? You have to clikc 2 times on Add to cart button? When you get Please choose product options message, when you click on Add to Cart button without selecting the radio button?
If you can also provide the site url, I can check the product page and identify the issue properly. Also kindly clarify the issue. I have enough experience in handling issues on woocommerce product page, I am sure I will fix this perfectly, whatever it will be.