How to edit a submission made on Jotform Sign document?

how do I access an existing document to edit it? My university had me use this system to make a submission. I need to edit and update this submission but cannot find the document?

Hello Kerry,

Thanks for reaching out to Jotform Support and we’re sorry you’re having trouble with this. Did you just sign a document created on Jotform and want to change something in it? 

Unfortunately, submissions can't be edited on a signed document. It's to keep the submissions legally binding. I suggest reaching out to the owner of the document and informing them that you will need to fill out and sign it again.

Reach out again if there’s anything else we can help you with.