Oddly, no (it may be a theme override).
However, now that you’ve explained this, I am going to allow checks because I can remove site registration from the checkout page in my theme and prevent access before checks have cleared. So thanks for that!
If it’s helpful at all to others, here’s a very quick summary of how to prep Woocommerce BEFORE you set up the plugin (I read the documentation and followed it carefully, but this part wasn’t clear until this exchange):
1) Install the plugin
2) Go to Woocommerce “Checkout” tab
3) Under “Checkout Options,” disable Guest Checkout if you require users to return and register after purchase (e.g., to complete a membership sign-up)
4) Under PayPal, disable the PayPal Standard option
5) Also disable any other active payment gateways (this will remove the default “checkout” buttons from any pages in your payment pipeline)
5) Under PayPal Express button, enable PP Express and follow each of the steps on the documentation page to configure. (https://www.angelleye.com/create-paypal-sandbox-account/)
6) If you choose to enable other payment gateways, you might want to use the Woo Docs to customize form-billing and form-shipping to edit elements non-PayPal buyers see (for instance, I removed the registration option and will manually add members after checks clear).
7) Rate the plugin highly and comment on the author’s awesome support
8) Donate to the plugin!
@angelleyes, I defer to you for corrections, and I hope it’s a useful summary of the WooCommerce prep for this excellent plugin.