We have only one payment option: Ideal. The user can't choose. But WooCommerce gives an error: no payment method is selected. If we have 2 items: it works like a charm. But one option gives this error. In the code i see that it's checked but in the "POST" data to /wp-json/wc/store/v1/checkout?_locale=site there is no payment_method variable.
In WooCommerce Mollie is the first item. Everything seems ok. But stil this error.
What can i do?