When you first create a bank-connected account in Wallet, your entire transaction history will not be downloaded. Wallet should download your bank transactions for the past 60 days to the app.
If you connected your account to an already existing account in Wallet, no transactions will be downloaded. Only new transactions made after the connection date will be downloaded.
You could try adding older transaction by using our Import feature:
1. Import file OFX with all data
2. Erase file import in App
3. Sync with bank