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