web.WhatsApp.com keeps saying phone is offline

NethServer Version: 7.9.2009
Module: Possibly Firewall…

Well… thats it… lol, i found out Whatsapp uses port 5222 maybe its a timeout issue?

How can i prevent connections from dropping?

Anyway, i changed phone behaviour with energy and Whatsapp. Maybe that was the issue, but not the case.

AFAIK 5222 is used for API about WhatsApp for business.

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Wow that link helps a lot! Thanks a bunch!