Downlink msg doesn't appear on TTN console

Hi, Hopefully, you can help. I have a Pycom lopy4 nano gateway and a lopy4 node. I can uplink messages from the node to the application console OK, I can simulate a download to my node via the console OK. What I’m struggling with is getting my HTTP Integration downlink message to appear in the TTN Application (Data) screen. I’m using the following curl command to test, the output looks OK. Is there something else in the console I need to configure?

           `curl -v -X POST --data '{"dev_id": "my_dev_id", "port":1, "confirmed":false, 
    "payload_raw":"AQE="}' https://integrations.thethingsnetwork.org/ttn-asia-se/api/v2/down/my-aap-id/my-process-id?key=ttn-account-v2.secret`

Partial Output
* Hostname was NOT found in DNS cache

  • Trying 13.69.184.129…
  • Connected to integrations.thethingsnetwork.org (13.69.184.129) port 443 (#0)
  • successfully set certificate verify locations:
  • CAfile: none
    CApath: /etc/ssl/certs
  • SSLv3, TLS handshake, Client hello (1):
  • SSLv3, TLS handshake, Server hello (2):
  • SSLv3, TLS handshake, CERT (11):
  • SSLv3, TLS handshake, Server key exchange (12):
  • SSLv3, TLS handshake, Server finished (14):
  • SSLv3, TLS handshake, Client key exchange (16):
  • SSLv3, TLS change cipher, Client hello (1):
  • SSLv3, TLS handshake, Finished (20):
  • SSLv3, TLS change cipher, Client hello (1):
  • SSLv3, TLS handshake, Finished (20):
  • SSL connection using TLSv1.2 / ECDHE-RSA-AES256-GCM-SHA384
  • Server certificate:
  • subject: CN=integrations.thethingsnetwork.org
  • start date: 2019-05-31 12:04:09 GMT
  • expire date: 2019-08-29 12:04:09 GMT
  • subjectAltName: integrations.thethingsnetwork.org matched
  • issuer: C=US; O=Let’s Encrypt; CN=Let’s Encrypt Authority X3
  • SSL certificate verify ok.

POST
User-Agent: curl/7.38.0
Host: integrations.thethingsnetwork.org
Accept: /
Content-Length: 88
Content-Type: application/x-www-form-urlencoded

  • upload completely sent off: 88 out of 88 bytes
    < HTTP/1.1 202 Accepted
  • Server nginx/1.13.7 is not blacklisted
    < Server: nginx/1.13.7
    < Date: Wed, 24 Jul 2019 07:36:58 GMT
    < Content-Type: text/plain; charset=utf-8
    < Content-Length: 0
    < Connection: keep-alive
    <
  • Connection #0 to host integrations.thethingsnetwork.org left intact