A test authorization for chambersign.demo.bpm.devcode.se to the Let's Encrypt staging service has revealed issues that may prevent any certificate for this domain being issued.
Fetching http://chambersign.demo.bpm.devcode.se/.well-known/acme-challenge/aN4QMgUQHeJBTConLn-fcm-gvO5xWe2j3iBPq2TPq8A: Timeout during connect (likely firewall problem)