If you want to invite guardian to your team you can follow these steps
1. Go to www.sportabler.com and login
2. Go to the members tab, find the players name in the members list and click the 3 dots at the end of the players line
3. Select invite guardian, and enter the guardians email. Now the guardian will receive an email invite where he can set up the account and connect to the player (In some cases this invite email might be filtered to spam folder).