To gain access to the admin page from the WAN side, you have to add a port forwarding rule for TCP Port 80 from WAN to LAN IP address 192.168.8.1. You have to connect to the Beryl’s wifi, then go to Admin Panel → Firewall → Port Forwards. Use the WAN IP address to access the admin page, which then gets forwarded to the LAN IP address.
You may consider adding port forwarding for TCP Port 22 also, which will allow you to SSH and WinSCP into the router.
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