If your Klarna account is set up for Billie, but still B2C methods are returned, please apply the following patch:
To apply the patch the following has to be done:
patch -p1 < MAGE-3778.patch
Note: The patch was created and tested on 2.4.2. Before applying it to other shop versions (2.3.0 - 2.4.3) please test it on a staging system before using it in production.