How do I stop Bit Defender from blocking external access by Edovia Screens?

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I use Edovia's Screens to remotely support Macs. If I am on the local network, Screens connects fine over port 5900, however if I am remote, I can never connect. How do I set Bit Defender to allow remote access from an external device. TeamViewer has no issue, the problem is unique to machines running Bit Defender and being accessed by Screens (either version 4 or version 5)

Thank you