So i've got the S5 on AT&T, and i use Textra, i overall really like it, but for some reason, majority of the time, when someone sends me a pic, i get a greyed out box with a picture icon with red triaangle by it iwth a ! in it. Also, when i try to send them a pic, it always fails, but when i switch back to the stock messageing app, it works fine, i went into settings, and changed the send mms limite to anyway for 300kb-no limit, same results. But like i said, when using the stock app, it works fine 99% of them from what i can remember, any ideas??