diff --git a/public/userdetails.php b/public/userdetails.php
index 615f375..b0d49c0 100644
--- a/public/userdetails.php
+++ b/public/userdetails.php
@@ -46,7 +46,7 @@ function isOwnAvatarFile($name): bool
 function loadUser(PDO $pdo, int $id)
 {
     $stmt = $pdo->prepare(
-        "SELECT id, email, username, password, first_name, last_name, phone, address,
+        "SELECT id, email, password, first_name, last_name, phone, address,
                 country_id, birthday, avatar, created_at
            FROM auth_users
           WHERE id = :id
@@ -92,7 +92,6 @@ if ($_SERVER['REQUEST_METHOD'] === 'POST' && $action !== '') {
         /* ---------- Dati personali ---------- */
         $firstName     = trim($_POST['first_name'] ?? '');
         $lastName      = trim($_POST['last_name'] ?? '');
-        $username      = trim($_POST['username'] ?? '');
         $phone         = trim($_POST['phone'] ?? '');
         $address       = trim($_POST['address'] ?? '');
         $birthdayInput = trim($_POST['birthday'] ?? '');
@@ -112,18 +111,6 @@ if ($_SERVER['REQUEST_METHOD'] === 'POST' && $action !== '') {
             }
         }
 
-        // Username facoltativo ma univoco
-        if ($username !== '') {
-            if (!preg_match('/^[A-Za-z0-9._-]{3,50}$/', $username)) {
-                $errors[] = 'Lo username può contenere lettere, numeri, punto, trattino e underscore (da 3 a 50 caratteri).';
-            } else {
-                $chk = $pdo->prepare("SELECT 1 FROM auth_users WHERE username = :u AND id <> :id LIMIT 1");
-                $chk->execute([':u' => $username, ':id' => $iduserlogin]);
-                if ($chk->fetchColumn()) {
-                    $errors[] = 'Questo username è già usato da un altro utente.';
-                }
-            }
-        }
 
         // Telefono facoltativo
         if ($phone !== '' && !preg_match('/^[0-9+\s().\/-]{6,30}$/', $phone)) {
@@ -159,8 +146,7 @@ if ($_SERVER['REQUEST_METHOD'] === 'POST' && $action !== '') {
         if (empty($errors)) {
             $sql = "UPDATE auth_users SET
                         first_name = :first_name,
-                        last_name  = :last_name,
-                        username   = :username,
+                        last_name  = :last_name, 
                         phone      = :phone,
                         address    = :address,
                         birthday   = :birthday,
@@ -171,7 +157,6 @@ if ($_SERVER['REQUEST_METHOD'] === 'POST' && $action !== '') {
             $ok = $stmt->execute([
                 ':first_name' => $firstName,
                 ':last_name'  => $lastName,
-                ':username'   => $username !== '' ? $username : null,
                 ':phone'      => $phone !== '' ? $phone : null,
                 ':address'    => $address !== '' ? $address : null,
                 ':birthday'   => $birthdayDb,
@@ -191,7 +176,6 @@ if ($_SERVER['REQUEST_METHOD'] === 'POST' && $action !== '') {
             $postedProfile = array_merge($user, [
                 'first_name'       => $firstName,
                 'last_name'        => $lastName,
-                'username'         => $username,
                 'phone'            => $phone,
                 'address'          => $address,
                 'country_id'       => $countryInput,
@@ -992,7 +976,7 @@ function renderFeedback(?array $fb): void
                                         </div>
 
                                         <div class="row">
-                                            <div class="col-md-6">
+                                            <div class="col-12">
                                                 <div class="form-field">
                                                     <label for="email">Email</label>
                                                     <div class="locked-field">
@@ -1003,13 +987,6 @@ function renderFeedback(?array $fb): void
                                                     <span class="field-hint">L'email serve per l'accesso e non si può modificare da qui. Per cambiarla contatta la segreteria.</span>
                                                 </div>
                                             </div>
-                                            <div class="col-md-6">
-                                                <div class="form-field">
-                                                    <label for="username">Username <span class="text-muted fw-normal">(facoltativo)</span></label>
-                                                    <input type="text" id="username" name="username" class="form-control"
-                                                        value="<?php echo e($form['username']); ?>" maxlength="50" autocomplete="nickname">
-                                                </div>
-                                            </div>
                                         </div>
 
                                         <div class="row">