Account balances automatically update once every 24 hours. If you're missing recent transactions it's because they have fallen outside of this window but will appear soon when your accounts update.
For Premium users it's possible to use the Sync button on the Dashboard underneath Net Cash to load real time balances.
If your balances are off by months or weeks try unlinking the account from Truebill and then relinking it. This missing data means our secure linking provider (Plaid) is having trouble connecting to your account and relinking it often solves the problem. You can also check here to see if there is a current issue with your bank or financial provider: https://status.plaid.com/