Problem: After updating to version 5.5.3, you are encountering a fatal error on the payment page when making a payment in a language different from the original. The error is related to the 'woo-stripe-payment' plugin where it fails to get the currency from an order object, which turns out to be false. Solution: If the issue persists, try disabling and re-enabling your theme, as this approach resolved the issue. Additionally, ensure that your theme and all plugins are updated to their latest versions.
If this solution does not apply to your case, or if it seems outdated, please check the related known issues at https://wpml.org/known-issues/ and verify the version of the permanent fix. If necessary, do not hesitate to open a new support ticket for personalized assistance.