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