Android app missing settings icon top right

Phone has updated app to 3.4.4.....?? And top right settings icon missing so I cannot adjust the battery state of charge when away from home. I use this a lot to reduce percentage charge if next day forecast is a good solar day. My tablet has not updated and still works, but only when connected to wifi.
Can I revert back to previous version?

coloneluk Hit the hamburger sign in the top left, settings, preferences and turn on ‘show systems modes’ button

Also worth turning on ‘show quick settings’ button to have the central ‘quick charge/discharge’ button

Many thanks, all good again