How do I reset remembered texting options?

[AC Question]

I am texting iheartradio, and it warns that my service provider might have data charges and if its okay. I remembered always no when i meant to say yes. so now i cannot text them. nor do i know how to fix it. I have reset all apps preferences and that didn't do anything.

 

[RogMoore]

I still don't get what help you need regarding that.