Are you on the website, the Tapatalk-based AC Forums app, or the main AC app (the one with news and videos)? You can't post pics on the last one. There's some way to do it on the Tapatalk-based app, but I don't know those details--I'm sure someone here could help with that.
On the website, it's easiest to attach images if you're on your computer. Click on the Attach Image button, which is in the row of editing buttons, just to the right of the globe icons, and below the smiley button. I usually upload my screenshots from my device to Google Drive, then download it to my computer first.
Posted via Android Central App