We are having the same issue with mollie and klarna.
Mollie: 7.5.5
WordPress: 6.5.4
WooCommerce: 9.0.0
2 years ago there was a simular issue:
https://ww.wp.xz.cn/support/topic/the-amount-of-the-order-does-not-match-the-total-amount-422-unprocessable-entity/
Need a fix for this issue, or perhaps I am downgrading untill there is a fix.
Looking forward to your reply.
Kind Regards,
Hans