When internationalizing the payment type forms, the labels should keep the object name so that the “for” attribute is set correctly on the label.
ie. should be:
<%= form.label :credit_card_number, t('.cc_number') %>
<%= form.password_field :credit_card_number, class: "input-field" %>
instead of
<%= form.label t('.cc_number') %>
<%= form.password_field :credit_card_number, class: "input-field" %>