Windows Firewall and Glasswire Firewall enabled?

The GlassWire firewall is a management interface to set rules in Windows Firewall. GlassWire is much easier to use than entering rules directly in Windows Firewall. That is why Windows Firewall must be enabled for the Firewall tab to be usable in GlassWire.

Your question is quite common and has been asked before, for example:

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