[HELP] HTC One m8 APN / MMS help

Hello,

I recently moved over from Verifags, and have an HTC One m8 version of theirs. I've gone ahead and updated my APN settings, and everything besides two things are working, and I wanted to see if anyone else could assist me in figuring out what I need to do.

My APN Settings:

Name: T-Mobile
APN: fast.t-mobile.com
Proxy: Not set
Port: Not set
Username: Not set
Password: not set
Server: Not set
MMSC: http://mms.msg.eng.t-mobile.com/mms/wapenc
MMS proxy: Not set
MMS port: Not set
MMS protocol: WAP 2.0
MCC: 310
MNC: 260
Authentication type: Not set
APN type: default,supl,mms
APN protocol: IPv6
APN roaming protocol: IPv4
APN enable/disable: APN enabled √
Bearer: unspecified

Everything is working, including being able to RECEIVE MMS, however I CANT send mms, and can't call my voicemail. Can anyone assist me? That would be great if you could!