Are your captions not showing up after you burn them in? It is most likely because of the browser you're currently using. There are two ways to solve this problem.
1. Try switching your browser to Chrome or Safari. We highly suggest using these browsers because they load quicker than others. You can download them for free by clicking on the links below.
Chrome - Download
Safari - Download
2. Another way to solve this problem is to use the private version of your current browser.
Press and hold down SHIFT + CTRL + N
Press and hold down COMMAND + SHIFT+ N