Welcome!
Use tbe Reply button at bottom of this page. In Reply page, click Additional Options. An Attach feature will appear. In Attach, use Browse to find the picture on your computer and attach it. Or from Quick Reply, use the Preview Option, and it will give you Additional Options. The pic cannot be any larger than 128KB. If it is, then use a third party like Photobucket.
If that doesn't help, wait a few days. Some of us have been having a problem with pics.