You should have received an email invite from your club to your email account. If you believe you received an invite but can't find the link, you use the Find Club button in the For Parents section of the Byga website.
Enter your email and follow instructions.
If your account is not found, please contact your club administrator to get an invitation to your Club's Byga service.
If your club is not on Byga, the For Parents section of the Byga website provides more information and a referral option to get your club on Byga.