Missions not syncing to smart controller

Missions sync ok to iPhone but not to the Litchi app on my smart controller. What am I doing wrong?

In order for missions to sync between any device and Litchi’s server, you must be logged into your Litchi account on that device.

Thank you for replying.
I have solved the problem by inserting sd card into smart controller to free up internal storage.
This allowed me to re install the Litchi app and now it works fine.
Thanks again