I can't see any images on the app when taking photos with the Mini 2.

Hi there. Thank you for reaching out and we do apologize for the trouble. Please double-check the settings "Cache video when recording" under DJI Fly App > General Settings > Camera, please enable the option and check if the issue persists. If you still experience the said issue, please reinstall the DJI Fly app on your mobile device. Let us know. Thank you for your support.