Why is my local pickup option not working anymore?

Hi, my local pickup option worked before. I added another location to make some trial couple days ago, then I noticed that local pickup did not work anymore evenif I deleted the all other locations and only have the default location. I read related manuals and forum discussions and changed couple setups, but the problem is still there. I need your help. Thank you.

Hoping that this article will help you to resolve your query: https://help.shopify.com/en/manual/sell-in-person/shopify-pos/order-management/local-pickup-for-online-orders#set-up-the-local-pickup-option