Battery percentage for MX Keys is not shown. You can only see it in Windows Bluetooth settings. For MX Master it is shown.

When charging MX Master 3 you can see the percantage going up. For MX Keys you cannot see it either in Bluetooth Settings nor in Logi+. It will update percentage as soon as it is charged 100% or if you unplug the charger.

Just a visual thing I want to have Keyboard shown on the left side and mouse on the right side in the Logi+ Software. WYSIWYG