If you get ads, popups, notifications from AdjustableBox, your Mac is infected with adware. AdjustableBox is adware for Mac.
AdjustableBox changes setting on your Mac. First, AdjustableBox installs a browser extension in your browser. Then, after AdjustableBox hijacks your browser, it modifies the settings in the browser. For example, it changes the default home page, modifies search results, and displays unwanted pop-ups in your browser.