This could be related to your device's support for high-resolution media and its ability to decode such media. There are suggestions at https://community.gopro.com/s/question/0D5Uv00000DU9uRKAT/my-edits-wont-save-to-phone for you to try.
This could be related to your device's support for high-resolution media and its ability to decode such media. There are suggestions at https://community.gopro.com/s/question/0D5Uv00000DU9uRKAT/my-edits-wont-save-to-phone for you to try.