mobile

I rooted my m8 for t-mobile and am running resurrection remix Lollipop 5.1, I don't think the Rom has anything to do with it because I have used other rooms before and still had the same issue. Does not have to deal with my sms app either as I have tried multiple apps including my stock one and hangouts and the issue still occurs. My texts will not send correctly. I will text someone, and everything will seem fine, my phone says that the text has been sent, however the person never received the text. This happens with multiple people. Can anyone help?