SIM5320A GPRS Shield - Not connecting

Hi,

I have a SIM5320 GPRS shield from Tinysine, and I'm having trouble getting the board connected. I just cut down on the FONATest code because I only need the GPRS functions, and the blue LED on the board flashed in the "Intialization" stage but the board just ends with "couldn't find FONA" and the blue LED stops flashing. Any help would be appreciated if someone has had this problem before