the router settings are fine and the DDNS service worked well in la last two months, but starting from the beginning of october did not anymore. I am also asking assistance to NOIP support because maybe there is some mistake that I made in their settings, but the most strange thing is that if I verify DDNS status in Teltonika it gives me "success" message so I believe this is the comfirmation that IP was correctly ubdatet to the no_ip.com system. So why now the NO-IP service is not updated? Should I change provider and select onother one?