Need help with Input Audio using Donner Podcard Mixer via Mac

Hello everyone, I'm new to podcasting. As I'm in remission for cancer I decided to spend my time on just voicing my life stories on a podcast. I am on episode 3 so far but ive been using my macs built in microphone as I am SO dang confused about using my Donner Podcard. I feel I have everything connected correctly, for the output I do see the Podcard showing up, but for the input instead of the Donner Mic that came in the podcard bundle it only shows me the built in mic. Am I doing something wrong? Ive searched on google for hours and I truly mean hours with no success. If someone can be my hero ill glady buy you some coffee lol. So heres the setup I have, I am using the Donner Podcard Podcast Bundle with came with a microphone. The microphone XLR is connected to the podcard on IN1, Podcard in connected via bluetooth as well as connected via usb on the mac. I am using apples 3.5mm headphones to listen to the sound, theres also a cable that has 3.5m on both ends, one connected to the mac and the other to the Aux IN. What am I missing :(