Steps to turn on Firewall on your devices:
Turn on firewall at least on one of your firewall products: follow guideline from your organization or Firewall vendor to turn firewall on. Below are some references
Click on OPSWAT Client tray icon, select "Recheck" or "Check applications security" depends on the agent version you are running. Wait few minutes and check again.
If you already turn on Firewall but the issue still occurs, please log into OPSWAT Portal and open a support ticket with us. Please attach screenshots which proves that Firewall status is ON and version of the product installed to the ticket.