How can I display Shop Pay button on the checkout page?

[yu6]

I am developing Subscriptions apps.

Shop Pay contacted me to support it with Subscriptions, and I developed it based on the documentation, but the following problem occurred.

・ The shoppay button is also displayed on the shopping cart page, not on the checkout page.

・ Currently, it is no longer displayed on the shopping cart page.

Ideally, you should also see the shoppay button on your checkout page.
If anyone knows how to solve this, I would appreciate it if you could help.