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Forum Discussion
LINE App Cannot Send or Receive Messages When Connected to RBR750 WiFi
Hello All, Since two days ago, mobile devices (iPhone 16 and older Android) connected to our RBR750 WiFi cannot send or receive messages on LINE, and LINE VOOM videos fail to play. Switching to mobi...
Something to get help from the app Mfr about regarding there app.
What is the Mfr and model# of the Internet Service Providers modem/ONT the NG router is connected too?
Try disabling the following and see:
Armor, Smart Parental Controls or Circle, IPv6, Traffic Meter.
Try disabling AX mode on the RBR. Under Basic/Wireless check box.
Hi,
Thank you for your reply.
🔹 Information from LINE App Support
According to the official LINE App support page, for connection-related issues, it is recommended to switch between different network types — such as WiFi and mobile data (4G/5G) — to help identify the cause.
If the app functions normally after switching, it usually indicates that the problem is related to the network equipment, and users are advised to contact their network device provider for further assistance.
🔹 Network Device Information
The upstream device connected to the RBR750 is a Nokia G-0425G-P GPON HGW, which was provided by the ISP during the internet installation.
🔹 Tested Actions
The following features have been disabled for testing, but the issue persists:
Netgear Armor
Smart Parental Controls / Circle
IPv6
Traffic Meter
Additionally, AX mode was also disabled for testing, but this did not resolve the problem either.
🔹 Additional Observations
This network setup has been running normally for over two years without any issues until this problem suddenly appeared two days ago.
All other apps requiring internet access (e.g., Instagram, Facebook, Email, Telegram) continue to work perfectly — only LINE is affected.
Since LINE is a very popular and widely used app in our region, and Netgear products are known for their high-end performance and reliability, this situation is quite puzzling.
🔹 Request for Further Assistance
If there are any additional suggestions or troubleshooting steps that I can try, please kindly let me know.
Thank you very much for your support.
Are you using ISP DNS or custom DNS on the RBR?
Your ISP Modem already has a built in router and wifi. This would be a double NAT (two router) condition which isn't recommended. https://kb.netgear.com/30186/What-is-Double-NAT
https://kb.netgear.com/30187/How-to-fix-issues-with-Double-NAT
Couple of options,
1. Configure the modem for transparent bridge or modem only mode. Then use the Orbi router in router mode. You'll need to contact the ISP for help and information in regards to the modem being bridged correctly.
2. If you can't bridge the modem, disable ALL wifi radios on the modem, configure the modems DMZ/ExposedHost or IP Pass-Through for the IP address the Orbi router gets from the modem. Then you can use the Orbi router in Router mode.
3. Or disable all wifi radios on the modem and connect the Orbi router to the modem, configure AP mode on the Orbi router.
Static IP Address Configuration for AP Mode | NETGEAR Communitieshttps://kb.netgear.com/31218/How-do-I-configure-my-Orbi-router-to-act-as-an-access-point
and https://www.youtube.com/watch?v=H7LOcJ8GdDo&app=desktop
Try option #2 first...