Unable to fetch endpoints

I am integrating Amazon Photos with my app. I have generated the API key and everything was working until a week back. Now when I am trying to fetch the endpoints, I am getting 403.

Request cURL:

curl 'https://cdws.us-east-1.amazonaws.com/drive/v1/account/endpoint' \
-H 'Accept: application/json' \
-H 'Authorization: Bearer Atza|IwEBIDpoYJg1Qyf8v7VepulvXlD9bq9dsEplMHU73y0_GacbmwxAUiY9RGNotZYmIA8ekGTMO9secMMmjNfEk9aJ1EWtFMnJ44c56bIJJJTunQYCLL-A3iBVmpuEq4wwNiE6PMXDDYx0nRWMQ4VDWe9TP6mFFJoS_Qkic6nu20rFlTUeT8rv8JnJc3lU6ueRYmry8RhyMI2qH6TEVNKbLzooihoio_3RnZceCpo8OOVyiwo7DtMY_2xwYnPk8gmfLeo6SWTm02GcxqD6WBOoh4jfqZU-qZefaAmt6_9RBrzLqAJ_k4_LvCZcFNvAKJqUu89dWGmEU3-z0RD4Sv8OoAkfGO1Dppgf3ju_rq3YjqboBmh1DedaLWlGPp8F4UpkQnhon-lUPIXAXwdy4cQ_XxhEfNsV' \
-H 'X-Api-Key: AmOo9yKYZNL5wylR1TtGLjfV5W9wOGGa' \
-H 'Host: cdws.us-east-1.amazonaws.com' \
-H 'Connection: Keep-Alive' \
-H 'User-Agent: okhttp/4.12.0' \
--proxy http://localhost:9090

Response:

{
  "message": "Insufficient permissions granted for operation: getEndpoint"
}

Can someone please help me here?

Hello,

Thanks for posting. Please note Amazon Drive has been deprecated, no apps using Amazon Drive can be submitted to the Appstore.

Can you please guide as to what needs to be used now?
I have followed RESTful API Getting Started | Amazon Drive
and updated the endpoint URL to https://drive.amazonaws.com/drive/v1/account/endpoint,
but I am seeing the same error.

{
  "message": "Insufficient permissions granted for operation: getEndpoint"
}

Is there any sample app for fetching amazon photos, that I can refer to?