Watch line is sending message blocking text

When I text message Android phones the receiver gets a text message from my Apple watch (which is paired with my Iphone) saying "Free Msg: Receiver unable to receive message - message blocking is active."  This only started happening a few days ago.  I checked all my iPhone settings and my T-Mobile settings and all the blocking options are off.  I also turned both watch and phone off and back on and unpaired the two but neither of those worked.  ¿Tienes alguna idea?