Unhappy [Q] OmniRom archidroid 2.4.4 problems with mobile data

Hello,

i've been using Omnirom for quite some time now, but i'm experiencing problems with my mobile data connection.
when I am using a touchwiz based rom, like Revolution HD, everything works fine. but when i am using a ASOP based rom like cynogenmod or Omnirom it doesn't work.

my mobile phone indicated that it has H+ connectivity, but no data can be transferred, apps like whatsapp and facebook seem to be function fine, but when i'm using apps like youtube or snapchat, it won't load.

could someone please help me with this issue? I'm willing to donate to the developer of the rom, but my mobile data is essential.