Login to your Webflow account, click the Options icon next to your website, and select Editor.
On the editor menu, click on the Gear (⚙️) icon.
On the Settings, click Ecommerce.
On Ecommerce, click Payment.
Connect your Stripe account - the same Stripe account you use in Double.
Once connected, click on the Stripe section.
Scroll down to Web Payments, enable Web Payments, and click Save.
Go back to the Ecommerce settings, and click Checkout.
Enable checkout, and click Save.
Go to your Double dashboard, open Settings → Entity, and select the relevant entity. On its Stripe processor card, click the Apple Pay control to open Verify domain.
Enter your website address in Add new domain and click Add domain. Once verification is complete, your domain appears under Verified domains.
Troubleshooting
In some cases, you may not be able to see the e-commerce settings. If you're on a Webflow Ecommerce plan and you don't see the Ecommerce settings, please contact Webflow support.