I am also having trouble getting information from the form onto a pdf that would be personalised

Once that problem is fixed, I am also having trouble getting information from the form onto a pdf that would be personalised. Not sure if it is better to do this through jotform or square as a receipt.

This is possible to configure personalized PDFs in JotForm. Please take a look at the next articles for more information:

Introducing JotForm PDF Editor - Turn form responses into designed PDFs

Applying Form Submission Data into a PDF Document

Generated PDFs can be optionally attached to the email confirmations:

How To Include Submissions As PDF Attachment In The Email Notifications