@Nathan-TP I detected an offset of the DST in the controller. I've adjusted the time and now I can connect every time with the controller over the Omda Cloud platform. Could this be the reason for...

@Nathan-TP After trying to connect to the controller again through the Omada Cloud platform, again I received an error message: "Failed to Connect" Then I tried the VPN and locally I was able to...

@Nathan-TP Thank you Nathan, I will give your suggestions a try. Step 1 i guess we can tick off the list, because I CAN connect to the VPN server and then make the local (LAN) connection. This is...

When trying to reach the Controller in the ER7212PC over the internet via the Omada cloud: https://euw1-omada-cloud.tplinkcloud.com/#cloudAccessManager Somehow I usually cannot reach the controller....

Thank you @Clive_A , Additionally, Although Delta/Caiway still states in their documentation they do not support IPV6 yet, they actually do. I've configured it like this: IPv6 Omada Controller ->...

For the Netherlands / FYI, The Delta/Caiway STB works **without** VLAN configuration in my Omada network. I have the following chain of devices: Internet connection: XGSPON Fiber network Delta/Caiway...