I try to make a curl on DHL api.
I already writed if my ip was blocked , but they confirm that is not blocked…
tha same call from other server goes ok.
But from my server the sresult is : curl: (52) Empty reply from server
I don’t know if the problem is related to TLS or other .. someone can help me to find where are the problem ?
this is a curl call:

curl -v -k -X -L GET 'https://api-eu.dhl.com/track/shipments?trackingNumber=7670087740' -H 'DHL-API-Key: WGP0HGo26c5OFRclZHqPHTAEpXXXXXXX'
*   Trying 172.66.40.55:80...
* Connected to GET (172.66.40.55) port 80 (#0)
> -L / HTTP/1.1
> Host: GET
> User-Agent: curl/7.88.1
> Accept: */*
> DHL-API-Key: WGP0HGo26c5OFRclZHqPHTAEpXXXXXXX
>
< HTTP/1.1 403 Forbidden
< Date: Fri, 28 Jun 2024 21:10:23 GMT
< Content-Type: text/plain; charset=UTF-8
< Content-Length: 16
< Connection: close
< X-Frame-Options: SAMEORIGIN
< Referrer-Policy: same-origin
< Cache-Control: private, max-age=0, no-store, no-cache, must-revalidate, post-check=0, pre-check=0
< Expires: Thu, 01 Jan 1970 00:00:01 GMT
< Server: cloudflare
< CF-RAY: 89b0a9cc4e284c78-HEL
<
* Closing connection 0
error code: 1003*   Trying 34.89.220.138:443...
* Connected to api-eu.dhl.com (34.89.220.138) port 443 (#1)
* ALPN: offers h2,http/1.1
* TLSv1.3 (OUT), TLS handshake, Client hello (1):
* TLSv1.3 (IN), TLS handshake, Server hello (2):
* TLSv1.2 (IN), TLS handshake, Certificate (11):
* TLSv1.2 (IN), TLS handshake, Server key exchange (12):
* TLSv1.2 (IN), TLS handshake, Server finished (14):
* TLSv1.2 (OUT), TLS handshake, Client key exchange (16):
* TLSv1.2 (OUT), TLS change cipher, Change cipher spec (1):
* TLSv1.2 (OUT), TLS handshake, Finished (20):
* TLSv1.2 (IN), TLS handshake, Finished (20):
* SSL connection using TLSv1.2 / ECDHE-RSA-AES256-GCM-SHA384
* ALPN: server accepted http/1.1
* Server certificate:
*  subject: C=DE; ST=Nordrhein-Westfalen; L=Bonn; O=Deutsche Post AG; CN=api.dhl.com
*  start date: Apr  2 06:41:20 2024 GMT
*  expire date: Apr  2 06:40:20 2025 GMT
*  issuer: C=DE; O=Deutsche Post AG; CN=DPDHL Global TLS CA - I5
*  SSL certificate verify result: unable to get local issuer certificate (20), continuing anyway.
* using HTTP/1.1
> -L /track/shipments?trackingNumber=7670087740 HTTP/1.1
> Host: api-eu.dhl.com
> User-Agent: curl/7.88.1
> Accept: */*
> DHL-API-Key: WGP0HGo26c5OFRclZHqPHTAEpXXXXXXX
>
* Empty reply from server
* Closing connection 1
* TLSv1.2 (OUT), TLS alert, close notify (256):
curl: (52) Empty reply from server

i tried to force TLS1.2 too with parameter “–tlsv1.2” but not working too