Frustrated X2

I purchased this app 2 times! I send M-F a bible scripture/encouraging WORD to over 1000 people. People have been waiting for their daily encouragement, which Im not able to send. When the names show up green it works but not always. If my group shows up blue it will say a recipient must be removed because of iMessage. Ive tried everything... NOT WORKING! Can anyone recommend another app to send Mass Text? Thanks

Scripture/Encourage Sender about Custom Group Text, v4.0