"To opt in and purchase things online with Venmo, tap on the ☰ icon at the top of the app, then tap on Settings. In Settings, there’s the Buying section. To use Venmo to pay during checkout, tap Enable Mobile Web Purchase or Connect Browsers."

" In order to use this feature, you will need to opt-in on the Venmo app. After you have opted-in, simply tap the PayPal button on a mobile web browser to launch the PayPal checkout experience. If we're able to bring you the Venmo experience at this site, a Venmo payment option will appear on the next page."