@SSolheim Glad you've made it. By the way - resetting the device is in Step 3 of the troubleshooting guide I posted.

@Intracomp I don't believe you would be able to see a list of your registered DDNS names across several devices. TBH I've never tried to move a TP-Link DDNS name from one device to another. You can...

@DJDAN That's the ISP who makes that. Contact them and ask if they are giving you a public IP address on your modem. Another way to check that is to google in a browser "what is my ip address" and...

@DJDAN Configuring address reservation for your PC would be a good idea if its IP address is received by the modem DHCP. Follow the guide I posted for configuring virtual server (port-forwarding)....

@Ksal00 Login your RE web management interface at http://tplinkrepeater.net and check its connection status: If necessary re-configure the RE to restore its connection to your main router - use this...

@MunshifamHow_1 Contact your local support or your retailer if the RE is under warranty with this issue.