I accessed http://our-erp.com/ and it seems to be working. Did you already manage to solve your issue? If that's not the case, we have a Support Tool that will gather relevant information for us to debug the issue. Could you please download and execute it on the machine where the Odoo stack is running?
Connect to your server via SSH and just type the following to download&execute the tool:
wget -O bnsupport_tool https://downloads.bitnami.com/files/bnsupport/latest/bnsupport-linux-x64.run && \
chmod +x bnsupport_tool && \
You will be prompted to indicate the directory where your stack is installed (which is /opt/bitnami on VMs and Cloud Images by default).
NOTE: The tool will inform you about the information that will be shared with us and you can decide wether to share it or not. Please review it and ask us any doubt you have if you do not agree with sharing some of the information.