Are you trying to post pictures from your iPad? If so it is quite easy. Take your picture with your iPad in the horizontal position. Log on to QB and go to the picture section. Click on new thread box. When the new thread opens, type in your title in the title space. Type in your description in the lower text box. Look for the tiny paper clip in the icon box above the text box. This is for managing attachments. Click on the paper clip and a box will come up that ask you to choose existing photo. Click on that and your camera roll will come up. Click on your picture and click upload. Go back to the text page and click submit. (If your text is missing click on restore content)The picture will not appear until you click submit.
If ou are trying to post from iPhone I don't know if it is different.