Issue with EXT-X-VERSION 7

[ERM073]

When using EXT-X-VERSION 7, the viewer count and upload speed do not appear. Is this a bug or a feature of the specification?

I would like to use version 7 because versions 3 and 6 have severe audio synchronization issues.

I am using this API to retrieve the viewer count: https://docs.datarhei.com/core/api-ffmpeg/widget-website

Any suggestions on how to get viewer counts?