Make 2 payment methods unavailable for 2 payment methods

Hi,

Our 2 Klarna payment methods should not be selectable when the customer has selected 1st class and 2nd class delivery.

The options should be greyed out (or similar) and a warning pop up displayed explaining.

Please provide pictures of how the payment options would be unselectable and the warning would look like n your response.

We are using Woocommerce and Flatsome.

Please don't ask for access to the site, the situation is very easy to understand for those who have used Woocommerce before.