"text domain" name for CoursePress Pro ?

what is the exact "text domain" name for CoursePress Pro to use in Ultimate Branding's text change option ?
reason being to change text in that plugin alone.

also just to clarify,
1- in Ultimate Branding, "in this text domain" field refers to just that specific plugin and words/text in other plugins or the site would not be changed ?
2- would these changes apply just on the main site or all sites using the plugin (WP multisite) ?

kind regards,