Curbside Preferred Pickup times not listing

I want my customers to select a pickup time with one hour increments. when i select any options with “Allow customer to select their preferred pickup time.”, i try to check out and under the pickup time, it says “No results found”. When i select the option “Automatically choose the next available time”, it works like it should and lets me put in credit card info, but thats not how i want it setup.. Can someone help?

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