Quick and dirty you can indeed translate or force text replace through the add_filter function.
Also for the I’ve read and accept’ this is possible.
Use the following to cover both:
add_filter('gettext', 'translate_text');
add_filter('ngettext', 'translate_text');
function translate_text($translated) {
$translated = str_ireplace('Billing Details', 'Factuurgegevens', $translated);
$translated = str_ireplace('I’ve read and accept the ', 'Ik aanvaard de ', $translated);
$translated = str_ireplace('terms & conditions', 'voorwaarden', $translated);
return $translated;
}
The “&” from “terms & conditions” should be & amp; but editor replaces the code
