Using GoSMS pro and still can't recieve group messages, used to be able before.

[MKPHL]

I hate posting a question asking about this, but I have done some googling and seems that I could not find an answer.
I have GoSMS pro(T-mobile user, not verizon) installed, I have MMS Group Chat enabled and working but still having issues when recieving group texts.
It used to work fine, and I was able to receive and send group texts without a problem, but then one day it just stopped working. I can still send the group texts, but I get them seperately in the goSMS app. any help please???