<form action="https://partner.robokassa.ru/OfflineInvoice/Invoice/e773e29d-875b-4da9-9b47-ad3d9db459e1" method="get">
<input type="text" name="name" placeholder="Ваш логин" autocomplete="off" required>
<button type="submit" valut="Оплатить">Оплатить</button>
</form>