Did you try another computer? Do you have this issue with chrome and firefox as well? How about clear the cache of the browser? Make sure they are the latest version.

The device can only bind to one cloud account, do you share the account with your housemates? You can delete the bulbs from this account which all of you are using, then bind it to your own account....

It seems that cannot be changed, it must be on after power failure:(

Not using that model, but normally if the device is special for your internet service provider, then can contact ISP first for help. If they cannot help you, you can send email to...

Yeah there is no L2TP on the Archer VR2800. But I'm not sure what you need to do with that, what do you mean by route traffic? If you can kindly explain it, maybe there is another way to do this.

Normally the modem should have reconnected by itself. Go to Advanced > Network > Internet, click on Edit for your connection and the connection mode should be always on, right? So it should be keep...