Thanks. Seems the problem is solved.
Just did a tidy up of unused forms and templates and also any field map layouts that were not being used.
Not sure which one had caused the issue. I need to mention that I had a form and a template with the same name. I also deleted all the demo data that came with this plugin.

For anyone who is wondering, to delete a field map layout, load it up and then scroll to the bottom and hit “Delete Entire Field Map”. (It may be obvious, but it took me a few minutes to figure that one out)