Curbside pick up hours are simple but getting the confirmation email to reflect them seems impossib

[Villageside]

We are using square-up for online seedling sales. We are a farm business. We are accepting orders Sunday -Wednesday and need one day to prep orders for curbside pickup.Our wish is pretty simple:

Sunday orders = Tuesday morning (8 a.m. - 12 noon) pickup.

Monday orders = Wednesday morning (8 a.m. - 12 noon) pickup.

Tuesday orders = Thursday morning (8 a.m. - 12 noon)pickup.

Wednesday orders = Friday morning (8 a.m. - 12 noon) pickup. 

However, I can't seem to get the fulfillment time (I have it set at one day) + the store hours right. The order confirmation emails that customers get sometimes say pick up tomorrow morning after 8 am, sometimes say 3 days from the day they ordered. Very grateful for your insight on how I should set the Pick up hours in the Pickup and delivery controls. Thanks.