The 48kHz 64x64 M-DANTE module is supplied with a licence. 
To obtain the licence, you need to use the token found on the Fitting and Setup Guide, then register on the Audinate website, you will then be issued with a licence ID.

The format of the Dante Virtual Soundcard Licence ID token is 25 character alphanumeric, 5 blocks of 5.

eg:
ABCDE-ABCDE-ABCDE-ABCDE-ABCDE
AB345-A2345-ABC45-ABCD5-ABCDE
12345-12345-12345-12345-12345

Caution - both the token and licence follow the same format.

Entering the token provided on the Fitting and Setup Guide instead of the licence ID generated via the Audinate website will not work.