@d553 There should be a reason for that for sure. Any FW updates on the router recently ? Do the problematic devices get their IP addresses by router's DHCP server or they are statically assigned ?...

@Gernot.Koller Add an URL in your Parental Controls settings and check that particular device access to this URL and then any other URL. I would recommend to go with Access Control if Parental...

@Gernot.Koller Parental control is for restricting everything except the added URLs in the scheduled timeframe and since you haven't added any URL everything is blocked: "Add URL: Here you can input...

@cymru78 These are the recommended wireless security settings: If they don't work for you try these: Don't forget to click on Save button after changing them.

@Paul4256 Try the following: 1. Put the W9970 in "DSL Modem Router Mode". 2. Set its LAN IP address to 192.168.1.254 3. Set its DHCP server to "DHCP Relay" with Remote Server Address: 192.168.1.1...

@adtdata Make sure that you're with the latest FW for your device first. I presume you have configured port-forwarding on your main router to 841N LAN IP address on port 80: Then try using...