Only just come across this forum looking for a solution to exactly the same problem. I use QVIS dvr's which I think are the OEM for Dahura. I recently setup no-ip on a new DVR for a new customer and that is refusing to update the free name.no-ip.org account.
I have checked the settings against another customers name.no-ip.biz and other than the free host name all is good but the .biz one is updating as it should and as it has for the last nine months or so.
I'm wondering if there is a bug in the web interface or firmware with the recent systems?
