When you add a new custom Conditional Field to the moodle user profile, the new field does not display in the 'Add rule for customer profile field...' dropdown.
As the issue creater's Github account was deleted and as the reasons for this problem is most probably to be searched in the conditional field plugin and not in this plugin, I am closing this issue.
When you add a new custom Conditional Field to the moodle user profile, the new field does not display in the 'Add rule for customer profile field...' dropdown.