Sorry to learn you're no longer receiving Picture Messages. What happens when someone sends you a picture? Do you get alerted on your phone? If so, when you attempt to retrieve it, is there an error message? Are you able to send Picture Messages? All of these things are helpful in troubleshooting the matter to get it resolved.
If you prefer, you can also PM me with your wireless number, an alternate contact number where you can be reached along with a good time to call you. I'll be happy to reach out to you to work towards a resolution.