@MarcusMarcus Most probably that's an ethernet cable issue. Change the ethernet cable that connects the ethernet port and the RE450 - it has a gigabit ethernet port for sure.

@Jase74 Make sure you're with the latest FW release for your C54 - here. If your ISP uses MAC address protection, clone the laptop MAC address to the C54. Try again and if the issue persists you...

@Smeaol You mentioned that you have an old Airties modem with which this Windows 11 laptop works properly, correct ? On the other hand with Macbook Air there's no issue at all, correct ? Try to set...

@Smeaol Have you tried to use a different ethernet cable - for example the one within the VX1800v kit and check if there's a difference.

@djc290761 This guide should answer most of your questions. You don't have to set up port forwarding to use the VPN Client. If you need to fix the IP address of a device that use VPN Client use the...

@DeLorean From your screenshot - you got private IP address 192.168.100.58 on your WAN interface. As long as this is private IP address the port-forwarding won't work. To get this working you have to...