If you wish to edit the category name, you may need to check the checkboxes for selected stores and remove/add tags accordingly. (be sure to backup your database first)

You can try follow the steps below:

1. Backup your database especially wp_ssf_wp_stores and wp_ssf_wp_tag tables first

2. Select the stores using checkbox, enter category to remove then click on Remove tag

3. Select stores using checkbox, enter category to add then click on Add Tag