New DJI Go 4 Login requirement perhaps Litchi explains it better?

[atcsllc]

July 2017 Updates
iOS: Litchi for DJI Mavic/Phantom/Inspire
Version 1.17.2
- added Precision landing and Landing protection settings for Phantom 4
- added support for polygon shaped no fly zones (for china)
- misc improvements and bug fixes
Version 1.17.1
- misc improvements and bug fixes
Version 1.17.0
- with the latest DJI firmware for Mavic Pro (v01.03.0800 or higher), Phantom 4 Pro (v01.04.0602 or higher), Phantom 4 Advanced (v01.00.0128 or higher), Inspire 2 (v01.01.0010 or higher), Phantom 3 Standard (v1.9.20 or higher), Phantom 3 4K (v1.6.50 or higher), Phantom 3 Advanced/Pro (v1.11.20 or higher), Phantom 4 (v02.00.0106 or higher), users in China are required to activate Litchi by logging into their DJI account at least once every three months, this can now be done within Litchi. Outside of China, Litchi will automatically activate the application without requiring the user to log in within Litchi or DJI Go
- added support for Phantom 4 Advanced and Matrice 200
- added "Over Exposure Warning" general camera setting
- added "Enhance Display for D-Log Filter" general camera setting
- fixed issue where the RC shutter button would not always use the selected capture mode
- misc improvements and bug fixes