after restarting router in the morning, the IP mentioned in the Dyndns is not updated

Hi, I use webcome Grand PAn Tilt camera behind the BBOX BElgacm router. I configured the dyndns stuff in the router. I configured the details of DNS dns in the camera. I can get access outside via internet to my camera via the link I want. That's all fine.

Now, in the enening, I shut down the router, but the camera's stay on power. In the morning, I start up the router again.

The router get's from the provider a new IP as usual. As long as I do not restart the camera's , the old IP address stays in the DynDNS page, so nothing is activating the update of it. Only after a restart of the camera, it seems that the already know new IP address is only at that moment send to dyndns page. Some seconds later , the camera lin outside via internet is working again http://vergulden.dyndns.org:8889/

Any idea what could solve this problem. There is no build in reset function in the camera.

Cheers Piet