Groups messages/picture messages not working

[ajudy09]

I have the Droid Maxx and whenever I try to send a group message, it sometimes take hours for people to receive it. Instead of having a time stamp of when the text was delivered, it just says "Sending..."

I have tried turning the Group Messaging feature both on and off and I still have the same problem.

I also seem to have trouble with sending and receiving picture messages. I will get a notification saying that my message limit has been reached even though I have set my limit to 150 per conversation.

Any help would be GREATLY appreciated as I frequently need to send/receive pictures and group messages. Thanks!