I'm not 100% sure this is same for the Mini 4 Pro but you can try this for the first step (connecting your drone with your preferred remote) and then second step would be to bind. The video is close but not exactly; not me or my video:
support.dji.com
DJI Fly App Account and Device Binding/Unbinding Guide
After unboxing your new product, it is important to promptly bind it to your DJI account. Failure to do so will result in your inability to produce a DJI Care Aircraft Flyaway Report in case of a flyaway incident. To bind your aircraft and remote controller, or to perform an unbinding operation...
@RexAsh well you could look at the online manual,which tells you how to do it
