Due to limitations of the forum capacity and no way to extend it, we can sadly not allow to directly upload images, however there is a workaround.
You can embed external images by using the HTML Code function at the bottom
Enter this code in your HTML box that pops up:
<img src="MY IMAGE LINK.png" width="100%">
You will need a direct link form an external hosting site like https://postimages.org/
Remember many image upload sites don't give you a direct link, but a link with their watermark, this does not work in embedding, so you need to rightclick this again, and get the direct link.
Embedding a poll: <html> <iframe src="https://strawpoll.com/embed/example" height="y" frameborder="0"> </html>