If you are getting notifications from SharedAllocate, then your Mac is infected with adware. SharedAllocate is adware for Mac.
SharedAllocate changes setting in your Mac. First, SharedAllocate installs a browser extension in your browser. Then, after SharedAllocate 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.