1. unable to resize the main window
2. In System Information panel: "Unknow" should read "Unknown"
3. Once registered, change or remove "Registration" panel (it still reads as if not registered - full version displayed at bottom right).
4. System cleaner, system optimizer & tools tabs: elements do not display properly (eg. buttons, links, text) if screen resolution = 1366 x 768 and text/icons are set to 125% (ability to resize the window might alleviate this, but layout should ideally be aware of screen properties.)