The Arrived cash balance is not intended to provide traditional banking services, such as interest-bearing accounts and Arrived will not provide deposit insurance. The balance in your Arrived account will be FDIC insured by Wells Fargo up to $250k. If you have a separate Wells Fargo account outside of Arrived, then it is possible the balance of that account will be counted towards your total $250k FDIC limit with Wells Fargo.
To protect your Arrived cash balance, Arrived strongly recommends that you enable 2-factor authentication on your account. Additionally Arrived may send you a notification each time the external bank account linked to your account is updated.