If the cashier explains the deposit didn’t work and can’t provide a receipt for the transaction, make sure to have them return your cash.
The minimum for a cash deposit to your Dave Checking Account is $20, and the max is $500 with a daily limit of $1,500.
If you used a barcode, try refreshing it and using the new one. If you swiped your card, ask the cashier to try it again.
If it still doesn't work, the network might be down, so try again later, or at a different location.