hey my host name is "saif-qassamy.dynu.com" it suddenly not responding

Hostname saif-qassamy.dynu.com points to IP address 87.121.52.83 and was updated about 2 hours ago. Please let us know if this is not the correct IP address.

Hey, my host saif-qassamy.dynu.com is updated with ip correctly, but I use ur service to remotely administrate my pcs and there is any connection between my clients and server and when I track the host it give me errors and no respond

We have detected that your hostname saif-qassamy.dynu.com is being updated to 79.170.48.114 by the IP update client, which seems to be the IP address of your current location. Please make sure that you are running the client software on the remote computers that you are trying to connect but not your current location.

To stop the client software, please make sure that you also stop the 'Windows Service' in Misc tab of the client. Please refer to https://www.dynu.com/DynamicDNS/IPUpdateClient/WindowsClient for more information.