YouTube themselves are not updating Channel view counts at this time. This means that if you go to the about page on a YouTube channel today and look at the total views, it is not changing. The number is frozen.
With the source (YouTube) not updating channel views, we have no daily change data to show. This is why there will be a 0 showing for these days.
We do hope that Youtube update their channel view counts soon and will continue to monitor this.
Screenshot (below) of the about page on a YouTube channel where the total views number can be found.
Screenshot (below) of the flat line indicating 0 change in channel views for that day.