Version without jquery?!

here is a suggestion provided by chatgpt. would you mind giving it a try?

<script>
/* globals wpa_field_info, fluent_forms_global_var_1 */

var wpa_field_name, wpa_unique_id, wpa_add_test, wpa_hidden_field;

document.addEventListener('DOMContentLoaded', function () {
  wpa_field_name = wpa_field_info.wpa_field_name;
  wpa_unique_id  = wpa_field_info.wpa_field_value;
  wpa_add_test   = wpa_field_info.wpa_add_test;

  wpa_hidden_field =
    "<div id='altEmail_container' class='altEmail_container'>" +
      "<label for='alt_s'>Alternative:</label>" +
      "<input type='text' id='alt_s' name='alt_s'>" +
    "</div>" +
    "<span class='wpa_hidden_field' style='display:none;height:0;width:0;'>" +
      "<label>WPA <input type='text' name='" + wpa_field_name + "' value='" + wpa_unique_id + "'></label>" +
    "</span>";

  wpa_add_honeypot_field();

  if (typeof wpae_add_honeypot_field === 'function') {
    // IF EXTENDED version exists.
    wpae_add_honeypot_field();
  }

  if (wpa_add_test === 'yes') {
    wpa_add_test_block();
  }
});

function wpa_act_as_spam() {
  var firstBtn = document.querySelector('span.wpa-button');
  var actiontype = firstBtn ? firstBtn.dataset.actiontype : 'remove';

  if (actiontype === 'remove') {
    wpa_remove_honeypot_field();
    document.querySelectorAll('span.wpa-button').forEach(function (btn) {
      btn.dataset.actiontype = 'add';
      btn.textContent = 'Acting as Spam Bot';
    });
  } else {
    wpa_add_honeypot_field();
    document.querySelectorAll('span.wpa-button').forEach(function (btn) {
      btn.dataset.actiontype = 'remove';
      btn.textContent = 'Act as Spam Bot';
    });
  }
}

function wpa_add_honeypot_field() {
  // Combined form selectors
  var allFormSelectors = [
    // Main forms
    'form.wpcf7-form, .wpcf7 form',        // CONTACT FORM 7
    'form.wpforms-form',                   // WPForms
    '.gform_wrapper form',                 // Gravity Forms
    '.frm_forms form',                     // Formidable Forms
    '.caldera-grid form',                  // Caldera Forms
    '.wp-block-toolset-cred-form form',    // Toolset Forms
    'form.cred-user-form',                 // Toolset Forms
    'form.cred-form',                      // Toolset Forms
    'form.et_pb_contact_form',             // Divi Form
    'form.fb_form',                        // Divi Form Builder - Divi Engine
    'form.elementor-form',                 // Elementor
    'form.form-contribution',              // WooCommerce Reviews Pro
    'form.cart',                           // WooCommerce Cart
    'form#learn-press-checkout-form',      // LearnPress Checkout Form

    'form.wpa_form',                       // Generic Class
    '.wpa_form form',                      // Generic Class

    '.um-form form',                       // Ulimate Membership Form

    // Login forms
    'form.spectra-pro-login-form',         // SPECTRA LOGIN FORM
    'form#loginform',                      // Default Login Form
    'form#edd_login_form',                 // EDD LOGIN FORM
    'form.uwp-login-form',                 // USER WP LOGIN FORM
    '.et_pb_login_form form',              // For Elementor login form
    'form.eael-login-form',                // essential-addons login form
    'form.user-registration-form-login',   // User Registration & Membership for WordPress

    'form#lostpasswordform',               // Lost Password Form
    'form.lost_reset_password',            // Tutor Password Form
    'form.ur_lost_reset_password',         // User Registration & Membership for WordPress

    // Registration Forms
    'form.register',                       // User Registration & Membership for WordPress

    // Comment forms
    'form#commentform',                    // WP Comment with ID
    'form.ast-commentform',                // Astra Comment Form with class
    'form#fl-comment-form',                // Beaver Builder Theme Form with ID
    'form.comment-form',                   // WP Comment with class
    '.review-form form',                   // LearnPress Review
    'form#edd-reviews-form',               // EDD Reviews with ID
    'form.wpr-comment-form',

    // BBPress forms
    '.bbp-topic-form form',                // BBPress Topic Form
    '.bbp-reply-form form'                 // BBPress Reply Form
  ];

  // Append hidden field to all forms in the combined selector list
  var nodes = document.querySelectorAll(allFormSelectors.join(', '));
  nodes.forEach(function (form) {
    form.insertAdjacentHTML('beforeend', wpa_hidden_field);
  });

  // FOR FLUENT FORMS
  document.querySelectorAll('form.frm-fluent-form').forEach(function (form) {
    form.insertAdjacentHTML('beforeend', wpa_hidden_field);
  });
  document.querySelectorAll('.ff_conv_app').forEach(function (wrap) {
    wrap.insertAdjacentHTML('beforeend', wpa_hidden_field);
  });

  // QUICK HACK FOR FLUENT FORMS CONVERSATIONAL
  if (typeof fluent_forms_global_var_1 !== 'undefined') {
    if (!fluent_forms_global_var_1.extra_inputs) {
      fluent_forms_global_var_1.extra_inputs = {};
    }
    fluent_forms_global_var_1.extra_inputs[wpa_field_name] = wpa_unique_id;
    fluent_forms_global_var_1.extra_inputs['alt_s'] = '';
  }
  // EOF FLUENT FORMS

  // Insert after each input.wpa_initiator if its parent form doesn't have the hidden field yet
  document.querySelectorAll('input.wpa_initiator').forEach(function (input) {
    var form = input.closest('form');
    if (form && !form.querySelector('.wpa_hidden_field')) {
      input.insertAdjacentHTML('afterend', wpa_hidden_field);
    }
  });
}

function wpa_add_test_block() {
  var checkingTest =
    '<div class="wpa-test-msg">' +
      '<strong>WP Armour ( Only visible to site administrators. Not visible to other users. )</strong><br />' +
      'This form has a honeypot trap enabled. If you want to act as spam bot for testing purposes, please click the button below.<br/>' +
      '<span class="wpa-button" onclick="wpa_act_as_spam()" data-actiontype="remove">Act as Spam Bot</span>' +
    '</div>';

  // Clear First
  document.querySelectorAll('.wpa-test-msg').forEach(function (el) { el.remove(); });

  // Insert after every span.wpa_hidden_field
  document.querySelectorAll('span.wpa_hidden_field').forEach(function (el) {
    el.insertAdjacentHTML('afterend', checkingTest);
  });
}

function wpa_remove_honeypot_field() {
  document.querySelectorAll('.wpa_hidden_field').forEach(function (el) { el.remove(); });
  document.querySelectorAll('#altEmail_container, .altEmail_container').forEach(function (el) { el.remove(); });

  if (typeof fluent_forms_global_var_1 !== 'undefined' && fluent_forms_global_var_1.extra_inputs) {
    delete fluent_forms_global_var_1.extra_inputs[wpa_field_name];
    delete fluent_forms_global_var_1.extra_inputs['alt_s'];
  }
}
</script>