Answer from Website Toolbox:
We regret the inconvenience. Please note that iPhone or iPads do not support rich editing tool bar used on the text editor provided on forum. This is the reason why user may not notice any of the editing options on iPads and hence are unable to post pix.
The users can still post images as an attachment to the posts. The users can also use EasyCode to post images and videos when using iPads. Please refer to support article at the URL below:
http://www.websitetoolbox.com/support/342
We are in the process of releasing a new mobile version of our forum system. This would help users in making posts and working on forum in an easy manner when using mobile devices.