SMS text messaging

I would like the app better if I didn't have problems with sending. Take this evening, I sent a group text, the message was long, had no probkem with sending. Then I had two people I was sending a message to, individually, and the sending would have a swirling circle, letting you know that it was trying to send, but it just "sat" there and spun, never sending. I'm in the same location, sent the group, long message, with no problem, but short, individual message, just buffers.

I have a Moto g stylus. I reinstalled this app twice waiting for it to sync my messages. I KNOW IT TAKES A FEW MINUTES - NOT MY FIRST SMS APP! I waited 20 minutes each attempt and it just couldn't sync and get past the wait message.

Blocking means I don't want to receive the message at all, I don't want it in some hidden folder. You can't even understand a basic concept.