so i bought a dji fpv kit secondhand and everything works well, but the goggles don't. i'm not sure what the issiue is. it doesn't have the option to switch between mode which makes it imposible to pair with the dji fpv drone or the dji fly app. already updated the firmware but don't know what to do else. please help me get the mode switch option back.

Hi there. Thank you for reaching out and we do apologize for the trouble. Please confirm if you are using the DJI FPV drone or the DJI Digital FPV System/Vista Air unit. Please download the DJI Assistant 2 software and please confirm what specific firmware version are you using by providing us a screenshot so we can check it further. Lastly, if you are using the DJI FPV drone, please check the tutorial video below on how to link the DJI FPV to your DJI Goggles. Please keep us posted. Thank you.