Shop Pay Installments
After you make your first payment at checkout, you'll be charged either biweekly or monthly, depending on the installment payment option you chose. You'll be reminded by email and SMS text (if applicable) before each payment is charged to your card. You can also turn on push notifications in the Shop app to be reminded. However, you can't customize your payment schedule.
To learn more about eligibility, terms of service, policies when using Shop Pay, please visit https://help.shop.app/hc/en-us/articles/360057800071-Shop-Pay-Installments.