There are just few steps to check "Order Ready Time Adjustment" for your store.
Login to your Yamimeal Merchent Portal via https://merchant.yamimeal.com/web/merch/#/login
Click on “Merchant Settings” and select “General”
Scroll down and review on "Order Ready Time Adjustment"
Order Ready Time Adjustment is preset as "No" when your store is set to accept "Preorder"
If you need further assistance for this request, please send a ticket to Yamimeal customer care representatives via https://help.yamimeal.com/hc/en-us. We will try our best to help you as soon as possible.