Format. NTFS, are you sure this is compatible with the ATV2 running Kodi ? AirPort base Station ?
Mine is Fat32 HFS+ formatted. I'm not sure if this would make a difference.
here you go straight from Apple....
Quote:Supported formats
Mac OS Extended (HFS-plus) - Formatting a storage device as Mac OS Extended with journaling is recommended, because it may provide additional resilience if the device is removed or powered down while in use.
FAT16
FAT32
Note: Encrypted volumes, ExFAT, and NTFS formats aren't supported.
https://support.apple.com/en-us/HT202807