will not download mxt messages do i need an app

[AC Question]

it is just messages from one sender am able to accept messages with attachement and pictures

 

[ManiacJoe]

What phone?
What version of android?
What carrier?
What SMS app?

 

[B. Diddy]

Welcome to Android Central! When you say MXT messages, do you mean this? https://www.smsglobal.com/get-started/