Stripe “incomplete” transactions

I am using the WooCommerce Stripe Gateway 5.8.1 from a newly published website. I am getting a lot of “incomplete” transactions showing up in my Stripe account stating “customer has not entered their payment method”. I presume they are abandoned checkouts. How do I stop them being sent to Stripe?

I asked Stripe what is going on and they replied:
“This can happen for two reasons.

First, the customer didn’t enter their full card details in the checkout page or abandoned the Checkout page without completing the payment. To complete this transaction, your customer needs to enter their full card details in the Checkout (Payment page).

That said, the other reason for this incomplete payment is that your integration failed to collect the full payment details from your customer’s or your integration failed to pass the payment details to your Stripe account. As most of your payments are getting incomplete, I’d highly recommend you to re-inspect your integration and make sure that your integration is collecting and passing your customer payment information to your Stripe account.”