UniFi Android 10.21.3 improves overall app performance, stability and device setup experience.
Improvements
Added Update button to separate UniFi OS settings screen.
Added "Match Opposite" options when configuring Firewall Policies.
Added "Auto Allow Return Traffic" to Firewall Policy configuration.
Bugfixes
Fixed client icons not showing up in Most Active widget on Dashboard.
Fixed incorrect average signal in Insights Radios page.