So how we upload a photo or text in the weekly theme.
Open the weekly theme in the forum and hit reply under the inital text.
Or another option is at the end of the topic all the way down, the blue reply button
Than there will open an editor, this editor has two spaces, left is the workspace ,where you write and upload photos. The right part is a preview.
At the top of the editor you can see several icons, they are the same as most wordprocessors, the seventh from the left is the one to upload your photo or photos
Hit the icon and the next screen will pop up. From there it is all straight forward.
Hope this is a litle help how to upload in the forum.