I opened up a few Cash Management Accounts with Fidelity. I have not been able to add these to SImplifi. When I connect to Fidelity, it initially allows to me to select all Cash Management Accounts (in additions to the brokerage and Roth IRA account). But in the next step, Simplifi allows me to only add the brokerage and Roth IRA accounts and ignores the Cash Management Accounts.