How to show branch options

I need some assistance with the Cucumber for Jira plugin, specifically when I am setting up living documentation using Bitbucket cloud.  I am able to select a project, but not any branches. The options always come back as No Options.  I know for a fact there are branches in the projects but am unclear on how to get them to show up in the dropdown.  Below is a screenshot for clarity.

Is there a branch naming convention that needs to be followed? Is there a file structure requirement? Is there something else that must be considered?  Thank you very much for your time. I greatly appreciate any help you can provide