Is there anything I can do to the form I uploaded to make it compatible with the PDF form to JotForm feature?

You told me

We're sorry, we were not able to migrate your PDF form to JotForm

Unfortunately, we were not able
to complete your PDF Form.

Sorry for any inconvenience. 

I suggest to create a new form and do it manually. You can use this guide to get started: https://www.jotform.com/help/2-How-to-Create-Your-First-Web-Form

Just to add, please share your PDF so we can test it on our end. Thank you.