Sometimes, it may happen that Sessions Replays may not work properly. Please take in mind that this feature is currently in beta and is highly unstable.
The following reasons may be the reason to not work:
You have reached your monthly allowance for your website.
The tracking isn't set up and installed properly.
There's a bug (unfortunately, there's nothing you can do).
When a bug occurs, it creates automatically a log and sent it to our engineer team that will handle it as soon as possible.