After a while, I tried it again, and it is still not working. Router FW is 1.2.1, controller 5.5.6.

@Fae Could you please also elaborate a bit on what is the difference between "Line Backup" and "Always Link Primary"? From the description, I'm not sure... Also, "Line Backup" is there twice, which...

@Fae Great, I could not find it before. Thank you.

@Fae From what I have seen, it seems that one can set an online detection method when the controller is in standalone mode. But when it is managed by the controller, there is no such setting, and the...

@Philbert Thank you for your response! Unfortunately, when the router is managed by the controller, there is no such setting (or I couldn't find it), one can only set interval for online detection or...

Hello. I have two ISPs - one on WAN (primary) and another on WAN/LAN1 (backup). Today, my primary connection failed, but the router/controller did not switch to the backup one. When I tested it...