Late delivery date showing to customers

Hy, My concern is that all of my active seller fulfilled listings are showing delivery date of 9-15 days later from now. I have set the handling and shipping time to 1 day / 2-3 working days.

It should show up at max of 7 days. But it is showing a very late delivery date which is affecting my sells from last 2 weeks, as this new feature was launched on 16 September. After the launch of handling time it shows managed by amazon on shipping templates but now i have changed it to 2-3 working days till now all of my listings are at the bottom and no sells generated for last 2 weeks. I am very disappointed could anyone please help me in this matter.