@BanaToron If you use the Aceess Control feature, disable it and check how it goes. If the issue has been fixed then the problem is the new FW - details. If you don't want to use beta FW release just...

@Raj_Delhi_Ext Here's an installation video. Make sure you have the latest FW release on your RE - TL-WA850RE(EU)_V7_1.0.13 Build 231115

@DD-TP Acording to its tech specifications NX600 has only a VPN Server implemented.

@DamnNATtype If you have forwarded any port needed properly and this issue still exists then most probably your Internet IP address could be private instead of public. You can check this here: If...

@waqad Check the WA850RE hardware version. It's on its bottom sticker. If it's HW v7 update the firmware of your WA850RE to the latest one from here and test how it goes.

@acuponctus According to this FAQ Internet connection backup should be possible when using 4G/5G Deco unit in your network.