Dear @grzywek,

grzywek wrote

Hi, I am setting up a custom dynamic DNS service. The lowest update interval is 1 hour - why is it so long? Why can't I change for 1 or 5 minutes?

Sorry that the current update interval is 1 hour, this has been forwarded to the engineer for investigation, will suggest the R&D team to provide lower interval option like 1 minute.

Anyway, the question is, what if there is a reboot of my router / WAN? Do I still have to wait 1 hour for the update? If so, then this is a complete nonsense.

No need to wait 1 hour for the update after a reboot. It will monitor and update DDNS immediately once the reboot is completed, though there is no log to indicate this event.

As a test, I did a manual WAN reboot. The router got a new public IP, but the dDNS service was not updated.

May I know the DDNS server name you used for the test?

How long did it take to get the DDNS updated after the reboot was completed?

Hello @grzywek 

Please don't modify the [USERNAME] and [PASSWORD] as the real values. The only part to be modified here is after '@' and before '?'. Check out this post for details.