We can refresh the connection to download missing transactions, hello-oktrythisn.
You can manually update your bank account to get the missing transactions. Let me show you how:
Then, you can go to the Transactions page and filter the list to the specific date range to find the missing transactions. If transactions aren't downloading still, you can manually add older bank transactions into QuickBooks Self-Employed.
Keep me posted if you have other questions. You take care and have a great day!