Only my ringtones are playing instead of my notification tones?

I have set the default notification as the roadrunner "meep meep" noise, but whenever I get a text that has that default set, it plays my ringtone, no matter what I change the ringtone to. Restarting my phone doesn't work as I've done that multiple times. I don't want to have to do ANOTHER factory reset on this phone because I've already done that before to fix my apps not updating or downloading. I mean, I literally just bought this one. It's a ZTE overture 3 from cricket if that's any help. Thank you!