USB CDC appears as a COM Port but won't receive/send packets

So I'm using a stm32f070rb nucleo board. I have configured PA12 and PA11 as USB_DP and USB_DM respectively, and have set up the HSE clock in RCC all in STM32CUBEMX. When I try to communicate with my computer, it shows up in device manager as st-link and not stm32 device. When I send it packets, the microcontroller doesn't realize anything is being sent. How do I bypass the st-link to use the on-board usb port to talk to the microcontroller? Any tips would be much appreciated, thank you