I can't send short code messages or receive them. I need help unblocking this.
You can text 9999 and use the code for allowing short codes (essentially removing the block). The list of options available when texting 9999 is located at this link http://support.sprint.com/support/article/Block_or_allow_text_messages_from_your_phone/case-cx832318-20091103-160141. Let me know if you need further help as I have some tools on my end that I can use.
I'm glad we were able to get this worked out. As always if you have any questions hit us up on the forums and we'll be happy to help out!