When checking the cdn-cgi/trace, it states that protocol used is http=http/1.1
https://we-promote.it/cdn-cgi/trace
Although, with a server check using curl -v --http2 https://we-promote.it/, h2 is active with ALPN. What can be the problem?! Please help, i tried everything and still no results so far. 
- ALPN, offering h2
- ALPN, offering http/1.1
- Cipher selection: ALL:!EXPORT:!EXPORT40:!EXPORT56:!aNULL:!LOW:!RC4:@STRENGTH
- successfully set certificate verify locations:
- CAfile: /etc/ssl/certs/ca-certificates.crt
CApath: none - TLSv1.2 (OUT), TLS header, Certificate Status (22):
- TLSv1.2 (OUT), TLS handshake, Client hello (1):
- TLSv1.2 (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, Client hello (1):
- TLSv1.2 (OUT), TLS handshake, Finished (20):
- TLSv1.2 (IN), TLS change cipher, Client hello (1):
- TLSv1.2 (IN), TLS handshake, Finished (20):
- SSL connection using TLSv1.2 / ECDHE-ECDSA-AES128-GCM-SHA256
- ALPN, server accepted to use h2
- Server certificate:
-
subject: OU=Domain Control Validated; OU=PositiveSSL Multi-Domain; CN=sni95453.cloudflaressl.com -
start date: Aug 10 00:00:00 2017 GMT -
expire date: Feb 16 23:59:59 2018 GMT -
subjectAltName: we-promote.it matched -
issuer: C=GB; ST=Greater Manchester; L=Salford; O=COMODO CA Limited; CN=COMODO ECC Domain Validation Secure Server CA 2 -
SSL certificate verify ok. - Using HTTP2, server supports multi-use
As well, the tools.keycdn.com/http2-test says that HTTP/2.0 is supported.
Thank you for your time and help!