Please check that both ODU's are running the same software version. We do not support operation of units that are running diffrerent software versions. Our latest software can be downloaded here
https://support.cambiumnetworks.com/files
Customers can also re-generate their licence keys using our on-line tool here
http://www.cambiumnetworks.com/support/ptp/key-generator
If you are still experiencing issues, please provide the MAC addresses of the two units to Technical Support who will investigate the licence keys provided.
Phone: http://www.cambiumnetworks.com/support/contact-support
Online: http://www.cambiumnetworks.com/support/open-a-support-case
Email: support@cambiumnetworks.com