Customer can not reschedule their appointment even my policy allow it

I’m having trouble with
My customer can not reschedule their own booking even my policy completely allows it. It’s not in a pricing plan, and I allow all my service to be able to cancel and reschedule anytime.

When I test it as a customer, when I click “manage booking” in the “My Booking" page, I saw options for “Book again” “View form submission” “Cancel”.

When I see this page in the Editor, when I click “manage booking” in the “My Booking" page, I saw options for “Book again” “Reschedule” “Cancel”.

Customer is seeing this:

and this is my policy setting screenshot, all service runs in this policy:

Bookings don’t need my confirmation to confirm as well

**
Working in**
Wix Editor

Site link
haircity.ca

What I’m trying to do
Allow customer to reschedule without cancelling first

What I’ve tried so far
Policy is applied to all service, allowing customer to reschedule anytime they like.

Extra context
This is not in a pricing plan for multiple session, just a stand alone appointment, which will automatically approve as long as the calendar is free.