Hi @Clive_A , I tried a lot.Yes adopted. It is nowhere mentioned, that it is only valid for standalone mode. Then - can you provide a list, which commands are enabled, when adopted?

@Clive_A you got it That is was I also think! Even with disabled IPv6 it does not work. But I just found the solution which is definitely a bug. I am using WAN/LAN4 as Interface. WAN/LAN3 was...

@Clive_A Hi, The Provider is "GoIp" so I chose Custom Provider which was working for several months until now. The third party end is fine working! If I query the update URL, the DNS entry is...

I followed the CLI Guide here: https://www.tp-link.com/de/support/download/er8411/v1/ the CLI guide points to:...

Additional note: I disabled IPv6 WAN connection. Now IPv4 WAN is online. Nevertheless, in Insights - Dynamic DNS, the State is still offline and no updates are sent to Dynamic DNS providers

For those who are following and interested. Tp-Link support suggested to switch back to standalone mode and doing further experiments. So far, OpenVpn is still not working. I hope TP-Link is not...