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.
For example: If you create a saving strategy on a Monday, you wouldn't see those funds debited from your account until Tuesday and the same thing happens with a paused Reel, so if you pause your Reel on Monday but Reel had already created a savings transfer for Monday, you will see that amount debited from your account the next business day. However, after pausing your Reel, no additional savings transfers are created from on your behalf so you would not see any money debited from your account on Wednesday.
If you are still seeing debits two business days after pausing your Reel, please reach out so we can look into it!