We gave a new look to the tool interface with intuitive navigation, seamless project and campaign switching, and enhanced functionality. Opt-in now and switch back anytime until the end of August.
Go to your user settings in the top right corner and choose “switch theme”, then choose the new “modern” interface.
If you want to switch back go to the bottom left “account” and then choose “switch theme” again to go to the “legacy” theme.