Will the pixel tracking code slow down my website?
Why are some visitors excluded from tracking?
There are some cases where a visitor can be excluded from tracking:
Visitor has a browser that has local storage disabled or not working
Visitor has a browser/browser plugin that is blocking tracking
Visitor has an opted-out of tracking from your website
Why for some visitors, session replays are not playing or empty?
One possible reason is that the particular visitor is excluded from tracking due to having a browser/extension that is blocking tracking or opted-out of tracking.