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/X6_BOvKIGhduf56L_fuznUQE9F7o4OHqtnoqg_bTlMw: Timeout during connect (likely firewall problem)