I have just aquired a Matrice 210 V1 with two Cendence controllers with  CS monitors.  All working fine apart from the  controllers won't retain customised settings.
  All firmware is up to date and I have tried an Android tablet, Android phone and an Ipad all with no luck.
Also I can't get the gimbal pitch to recentre at all on any button.  Recentreing gimbal yaw works ok.
This is driving me crazy, now spent over a day trying to get the settings to retain.
I have done resets on the Crystalskys but no luck.

Any further ideas would be much appreciated.

I believe the setting are done in and by the master controller only. The slave only controls the camera in dual mode. Have you set them in the master cendence without the slave WiFi connected?