Mic > XLR > Phantom Power > XLR > POD.
Make sure the phantom power is on, and if there is a gain control on the phantom power unit that it's turned up a little, there is also a little black gain control Between the Mic input and the SPDIF out on the pod, you may need to adjust that.
Also, you need to go into the Input settings (I/O) of the pod, using the software (it's top left) or on the unit and adjust the input to pick up from the Mic input.