Hiding next button

My client would like to hide the next button until after the correct/incorrect message is showing. Right now it’s allowing them to click next OR submit answer on each question. Although I toggled the setting that doesn’t allow skipping questions, once they answer the question, they can still click ‘next’ instead of submit answer and they don’t see the results of that question. I tried hiding the next button but it’s needed after they submit the answer to get to the next question. I wasn’t sure if there was easy code you could add to hide it until the correct/incorrect message was displayed.

https://www.ads-software.com/plugins/slickquiz/