Workaround for Roth IRAs not downloading in Simplifi
Create a new manual account
Name it whatever you wish and make account type either Roth IRA or Brokerage depending on where you want the account entry to show up in your list.
From main page select your new manual account. On Holdings page select Add and start adding your Roth IRA holdings. Enter symbol, name, and number of shares.
Your Roth IRA should now update as expected.