This article explains how to associate a SonicPoint to a SonicWall firewall.
1. Login in to your My SonicWall account

CAUTION: The SonicPoint and the firewall must be under the same MySonicWall account.

CAUTION: To know the maximum number of SonicPoint products that can be associated per firewall, please check the link below:
https://www.sonicwall.com/en-us/products/firewalls/mid-range/access-points-supported