There could be 2 reasons for multiple debits from your account on the same day.
1. Reel debits your account for each item separately. So if you have more than one Reel active at the same time, you will see one debit from your account for each of the different Reels you are saving for.
2. Since Reel uses ACH transfers to save money for you, the transfer is created a business day before they are debited from your checking account. This means when you create your saving strategy, although you see the saving amount reflected on your Reel the same day, the amount is not actually debited from your account until the next business day. So if you start your Reel on a Friday with a daily savings strategy, the savings amount for Friday, Saturday and Sunday would all be debited from your account on Monday since that is the next business day.