click on checkbox doesnt work but it does on label

Hi Gus, yes this is the code:

thank you will make a review now 🙂

[md-form]
[md-text label="Your Name" ]
[text* your-name]
[/md-text]

[md-text label="Your Surname" ]
[text* your-surname]
[/md-text]

[md-text label="Please enter your email address" ]
[email* your-email]
[/md-text]

[md-text label="Organisation/Company you are associated with" ]
[text your-company]
[/md-text]

[md-text label="Job Title" ]
[text your-jobtitle]
[/md-text]

[md-text* label="Please enter your phone number" ]
[text your-phone] 
[/md-text]

[md-checkbox label="Please select the communications and PR service(s) you are looking for" ]
[checkbox* your-services "Need help determining" "Communications and Marketing Strategy " "Brand Development " "Leadership Profiling " "Global Media Relations " "Crisis Communications " "Event Management " "Website and SEO " "Social Media/Content Marketing " "Capacity Building"]
[/md-checkbox]

[md-checkbox label="Please provide your approximate monthly budget range for us to assess the services we can provide:" ]
[checkbox your-budget class:budgetselect exclusive "£5,000 to £7,500 per month " "£7,500 to £10,000 per month " "£10,000 to £15,000 per month" "Other"]
[/md-checkbox]

<div class="budget-conditional-field">
[md-text label="Please enter your approximate monthly budget amount:"]
[text your-aproxbudget]
[/md-text]
</div>

[md-checkbox label="How did you hear about us?" ]
[checkbox you-hearfromus exclusive "Google/Online Search " "Curzon PR Facebook/Instagram/Twitter" "LinkedIn" "Other"]
[/md-checkbox]

[md-text label="Please write here" ]
<label class="cf7md-label cf7md-label--static">Referred/recommended by:</label>
[text recommended-by]
[/md-text]
[md-textarea label="Please write here" ]
<label class="cf7md-label cf7md-label--static">How can we help you/your business/organisation?</label>
[textarea how-can-we-help]
[/md-textarea]

[md-submit]
[submit "Send Enquiry"]
[/md-submit]

[/md-form]