Each time a donation is made, it goes through a verification process before it becomes available for withdrawal. Your withdrawals will include all of the donations available at the time, so if it looks like there are some funds missing, this may well be because some donations are still being processed. Processing times depend on the card issuer for each donation and can vary from 1-2 working days to up to 14 working days.
You can see pending donations in your withdrawal overview under "Donations still processing".
Your "total raised" will be the total amount raised on your fundraiser, minus transaction fees (which include debit and credit charges). You can click the green "fees" button above your total raised to view a breakdown of your fundraiser’s fees.