Dear Rajesh,
Below are the screenshot for your understanding. I thought the estimated delivery leadtime will remain after the order being placed. Currently i am using product variation. Is that the root cause of it? I love the plugin but cannot afford the Pro.
Initial during checkout
https://ibb.co/DMYbqM6
After process the notification disappear
https://ibb.co/824ykwN
Inside the order list
https://ibb.co/x39RDdY
The pdf invoice generated
https://ibb.co/sgTjT1J