I get message “Please fill out the form on the previous page”

Hi There

Hope you all doing well
I need some help regarding my 2 level contact form.
When I click on my contact page I get the message “Please fill out the form on the previous page”

I have “W3 Total Cache” enabled but I tried disabling and clearing cache but still the same.

Any support would be highly appreciated.

I have two steps bellow. Sorry for the Japanese field names but I hope you can get the coding part.

お問い合わせStep1
================

<div class=”contactmail clearfix”>
<div>
<p class=”req”>お名前</p>
[text* your-name]
</div>
<div>
<p class=”noreq”>オナマエ（カナ）</p>
[text text-202]
</div>
<div>
<p class=”noreq”>郵便番号</p>
[text text-203]
</div>
<div>
<p class=”noreq”>都道府県</p>
[text text-204]
</div>
<div>
<p class=”noreq”>住所</p>
[text text-205]
</div>
<div>
<p class=”req”>電話番号</p>
[tel* tel-206]
</div>
<div>
<p class=”req”>メールアドレス</p>
[email* cust-email]
</div>

</div>

[submit “商品情報の入力画面へ進む”]
[multistep first_step “2-1-contactus2/”]

お問い合わせStep2
================
<div class=”contactmail clearfix”>
<div>
<p class=”req”>商品名</p>
[text* text-101]
</div>

<div>
<p class=”noreq”>商品の状態</p>
[radio radio-102 default:1 “新品” ” 中古” ” 故障”]
</div>

<div>
<p class=”noreq”>型番</p>
[text text-103]
</div>

<div>
<p class=”noreq”>付属品</p>
[textarea textarea-104]

<div>
<p class=”noreq”>商品のお写真</p>

[file file-138 limit:8mb class:media]
[file file-139 limit:8mb class:media]
[file file-140 limit:8mb class:media]

</div>
</div>

<p class=”re”>
[previous “お客様情報の入力へ戻る”]</p>
[submit “　送信する（申し込む）　”]
[multistep “2-2”]

The page I need help with: [log in to see the link]