if you are posting under a video, it won't work. If you post under a forum thread, it will either appear as a photo or a link to click on.
Upload your images to ImgBB website, copy the link, and paste it into the topic you’ve created.
See the screenshot below - this is what you'll see when you click on the up/down arrows on the right of the code box. It may take a bit of time for your image to appear once you've copied and pasted the code into your forum post. Check back in an hour or so!
Make sure you copy the link from ImbBB onto your forum post.