Give it a while to load or refresh the page. (By the way, I'm not an Apple user.)
If it's saved on your computer then go to the main forum and click "Post New Question" to submit help on your math problems. After you click it will take you to another page to edit where you can add an image by clicking the Image button. Then you can upload an image to submit and remember to add text as well to post.
You have to click "Choose" for an image to upload then find your image on your computer and after that, you click the checkbox to confirm on that window.