License for staging site in subfolder

Hi, this is a pre-purchase question.

We are using WPvivid staging plugin in our development process. This plugin allows us to quickly deploy a staging site in a subfolder of the main WP site, like “domaine.name/staging”.

Will the Polylang Pro single license be available for this staging site?
In your documentation page, subfolders are not mentionned, but maybe the whole foldertree is included?

Thx!