SMS tweets just stopped being received suddenly. Help?

In the past two weeks, SMS tweets aren't being sent to my phone. They worked fine before(for months, with no problem), and now, nothing. I've tried deleting and re-adding my phone via the "add device" function. Though I can send updates to my account using 40404(My carrier is Sprint), when I re-added my phone number and sent in the text code I never got a reply (but 40404 works for updates.) It still isn't getting tweets sent to me via SMS. I only follow two people via SMS, but it's very important to me that I actually get those tweets sent to my mobile. Again, I can *update* via 40404 just fine. But tweets aren't being sent to me.

Help?
 
sad I’m confused and frustrated
Inappropriate?
7 people have this problem

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