# Release 11.4

Release 11.4 focuses on performance and stability, fixes in S2S postbacks, flows, offers, and reports, and several interface improvements.

# Performance and stability

Redis has been updated to the latest stable version, and the tracker now consumes less RAM in certain cases and stays stable under high load. Log queries are faster, and upgrading to Keitaro 11 is more efficient for large datasets.

# S2S postbacks

The S2S postback URL builder in Facebook traffic source settings no longer opens a blank page, and a valid S2S postback URL is no longer rejected in the Source settings. The S2S postback is no longer sent twice for the same conversion, and campaigns can be saved without S2S postback statuses.

# Flows and offers

Redirect offers with the 'No referrer' type now open after upgrading to Keitaro 11, and offers created via the API open correctly without payout fields. Uploaded files are saved to the selected subfolder, offer names are fully visible in the Flow scheme, and a Direct URL in Flows now accepts URLs built from custom macros. Custom actions can be created without a URL field, the Flow filter no longer lists connection types that cannot be detected, and turning off a Flow no longer turns off the whole campaign.

# Reports

The Sub ID filters now load their values in reports, and the 'Previous campaign' grouping is available again. Opening reports inside a campaign no longer changes its last updated time.

# Domains, settings, and security

The domain status now updates correctly after a server migration when the domain still points to the previous server. The campaign link copy alert shows the correct text. Several minor security issues have been fixed, and the admin panel access by IP setting has been removed from Settings for Starter and Advanced licenses.