Message "blocking active" comes up when i try to text anyone

[debra langager]

Why am I unable to text...it worked fine before...and my phone is active. I keep getting the message that blocking is active. My work depends on my emails...how do I turn it off???

 

[B. Diddy]

Welcome to Android Central! Which phone do you have, which messaging app are you using, and which carrier are you on?