2 Column layout not working

I have set up a form, attempting to use the 2 column layout of “Ultimate Addons for Contact Form 7” no matter what I do, it’s not showing as intended.

I have followed the 2 suggestions on this thread as well: https://www.ads-software.com/support/topic/error-creating-2-columns/

Code below, I’ve only used the 2 column setup on the first few entries while trying to get this sorted

[uacf7-row]
[uacf7-col col:6] [text* First_Name_text placeholder "First Name"] [/uacf7-col]
[uacf7-col col:6] [text* Last_Name_text placeholder "Last Name"] [/uacf7-col]
[/uacf7-row]

[uacf7-row]
[uacf7-col col:6] [text* Title_text placeholder "Title"] [/uacf7-col]
[uacf7-col col:6] [text* Preferred_Name_text placeholder "Preferred Name"] [/uacf7-col]
[/uacf7-row]

<label>Address:[text* Address_text placeholder "Address"]</label>
<label>Postcode:[text* Postcode_text placeholder "Postcode"]</label>
<label>Telephone Number:[tel* Telephone_Number_tel "Telephone Number"]</label>
<label>Date of Birth:[date* DOB_date placeholder "Date of Birth"]</label>
<label>Email:[email* Email_email-932 placeholder "Email"]</label>

<label>I agree to be part of the WhatsApp group:</label>[radio WhatsApp-radio-151 label_first default:1 "Yes" "No"]

[submit "Submit"]

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