We have a tool that can check your instance for common issues and will suggest possible solutions. Could you execute the following commands to download and run it?
curl -LJO http://downloads.bitnami.com/files/downloads/bndiagnostic-tool
chmod +x ./bndiagnostic-tool
sudo mv bndiagnostic-tool /opt/bitnami
Please note that this tool is under active development so could you please share the output with me so I can check it?