It's up to your recruiter to decide when to close or complete your reference check. In most cases, employers require that 2 or 3 raters respond before the recruiter can complete your reference check.
If you have any questions about when your reference check will be completed, please contact your recruiter directly about that.
To ensure that the process goes as quickly as possible, it's recommended that you follow your recruiter's instructions on who to invite to your reference check, and that you connect with your raters outside of Checkster to let them know that you invited them to participate in your reference check. Inviting more raters than what the recruiter asked for may also help speed up the process.