Tracking source of form submissions if the users clicks several times before submitting the form

We use tracking links to track the source off traffic to our website: social media, pay per click, and etc. Then when a form is submitted, we have a hidden source field so that we can track the lead source in our CRM and track conversions and make advertising decisions. However, Squarespace strips out the tracking link as soon as a user clicks away from the landing page. To solve that, I added this code 

 <script >
   <!-- Code to keep tracking URL through entire session -->
     
   $('.three-digits .field-element').attr("type", "number");
   $('.number .field-element').attr("type", "number");
  </script>

This would keep that tracking code appended to the link as a user browsed the site. However, it stopped working a few months ago. Any suggestions on how to solve it?

3 hours ago, djtentman said:

We use tracking links to track the source off traffic to our website: social media, pay per click, and etc. Then when a form is submitted, we have a hidden source field so that we can track the lead source in our CRM and track conversions and make advertising decisions. However, Squarespace strips out the tracking link as soon as a user clicks away from the landing page. To solve that, I added this code 

 <script >
   <!-- Code to keep tracking URL through entire session -->
     
   $('.three-digits .field-element').attr("type", "number");
   $('.number .field-element').attr("type", "number");
  </script>

This would keep that tracking code appended to the link as a user browsed the site. However, it stopped working a few months ago. Any suggestions on how to solve it?

Can you share your URL so I can check it?

https://tentsforrent.net

I hired a developer and he injected some code. So, it works again now.