I bought a BLU Vivo IV and I downloaded Textra but I can't receive any MMS messages or send any... I tried to manually put in the APN settings but still nothing...
***Edited to add Labels***
Welcome to the forums!
Just to check, is this your phone? From those specifications, that phone does not have LTE so you should be using the two APNs: fido-core-appl1 and mms.fido.ca You can refer here and here for help with the settings.
Hope this helps