Get orders from orders API error 403 forbidden

Hi,I'm trying to sent a request to get orders from Commerce API and it return error 403 Forbidden.

This is my url:

https://api.squarespace.com/1.0/commerce/orders?modifiedAfter=2019-08-01T12:00:00Z&modifiedBefore=2019-08-11T12:00:00Z

but I use:

https://api.squarespace.com/1.0/commerce/orders

It return sucessful and get the orders.

The both with 2 Headers

"Authorization: Bearer API_KEY"

"User-Agent: Mozilla/5.0"

Why it return error when I use the time filter? Thanks.