Well the conflict is with woocommerce. I fixed it by adding the following code in the functions.php via the theme editor(in the child theme).
add_filter('woocommerce_default_address_fields', 'override_address_fields');
function override_address_fields( $address_fields ) {
$address_fields['address_1']['placeholder'] = 'House number and street name';
$address_fields['address_2']['placeholder'] = 'Apartment, suite, unit etc. (optional)';
return $address_fields;
}
Then I translated the strings with TranslatePress.
Am unsure if this issue is on TranslatePress side or Woocommerce side.
Adding @radicalm1nd for fix.