According to Downdetector, most of the problems were on the Fidelity website.

(Reuters) -Fidelity trading platforms experienced outages just as U.S. stock markets opened for trading on Monday morning, leaving many users of its online, mobile and Active Trader apps unable to ...

(Reuters) - Users of Fidelity's trading platforms encountered a series of glitches that stopped them from logging on to their accounts, just as U.S. stock markets opened for trading on Monday morning.