The default view in Live View will show up to the 50 latest Events sent into your Mixpanel project. Live View does not show events with timestamps dated more than 7 days ago.
When you apply a filter, Mixpanel scans events with timestamps within the last 7 days. When using the search box, Mixpanel looks through the last 10,000 events, in the last 7 days, that match the filters if there are any.
Live View is designed primarily to help review the state of the latest data as it comes in for debugging and QA purposes. At this time, there isn't a way to change the range in Live View to look at more events or a longer time period.
See More Data
Data available in Live View is generally available elsewhere in Mixpanel, so you can look at other reports to see more data or a longer time period:
If you are filtering for a specific Event and want to see more historical data on that Event, select that Event in Insights for additional analysis.
If you are looking to study the activity of a specific user, view that user’s profile in Explore to see more data.
If you absolutely want to view the raw data coming into your project or apply more advanced filtering, please use JQL for further analysis.