It is hard to use but it works
The up-loader is currently not functional whatsoever. We experienced a server failure in early March of 2016, and issues still persist with the image uploader as a result of this event.
Anyone wishing to post images to the forum should refer to this document: https://forums.thefirepanel.com/t/correctly-posting-images-to-tfp-attachments-workaround/2255/1
Thank you.