If you have database access with something like phpMyAdmin, you can create the link yourself as well. The important part is stored in the wp gf_draft_submissions table. You can create the link like this:
https://example.com/your-page-with-form/?gf_token=6c538c146e1c4df48fb5679e6a9220ee
where the gf_token value comes from the wp_gf_draft_submissions table (it’s the UUID value.)
I know that’s not in the back end, but it is possible to recreate a link.