What version of LANDESK Mobility are you using? What kind of device/s? What is the OS version of those devices?
I would make sure that you are using the correct App. You should use Wavelink Avalanche App.
I am using the LDAgent app, It used to work not sure what has changed. We are using 1.0.4452 of the app and LANDesk mobility of rmanagement suite 9.5
You should be using the Wavelink Agent App. Go to the play store and search for the Wavelink Avalanche App. Is this the App you are using? If you are not, then install that App and enroll your device into AOD. The LDAgent App is the old LDMO App and was made to work with the old LANDESK Mobility (9.0 -- Odyssey).