@xwsjfx You should put a keyword which is part of an URL - check your router user guide - Chapter 7 - Parental Controls. Leaving "Blocked content tab: empty" won't restrict access to any Internet...

@RPV2019 I presume you're using http://<DDNS>:8080 when trying to access the AX3000 remotely on port 8080. You are trying to access the AX3000 by its DDNS from an external network, not from your LAN...

@RPV2019 The router LAN IP address shouldn't matter when using a remote access. Try setting the HTTP to other port (like 8080 for example) and test again.

@APerson It depends on your router model but in general it's much similar over different models - here's a video guide.

@MH7 These two models don't seem to support WDS. Use this link to view the WDS/RE compatible devices.

@gzbotii Go with the beta FW. You can always revert back to your current FW version if this doesn't help. In the beta FW you can switch off OneMesh feature if you don't use it.