If the player you are registering is 18 or turns 18 during the season, they will need to complete SafeSport training as required by Badger Region and USA Volleyball.
(21-22 Badger Junior 18s Player Membership)
https://badgervolleyball.org/badger-region-membership-options/
If you are 18 years old and are registering yourself, you must register as the parent/supervisor of the account and add yourself as a player as well. Adding yourself as just a player will not allow you to register for any programming without having an account supervisor (yourself).