Saleh Hello!
When creating a unit, please select in sequence:
Device Category - HARDWARE
Device Type - Queclink GL500M or Queclink GL501M
To see not the DNS format of the server, but the IP format, please click on the corresponding button next to the server value in the unit menu - Settings - Common. You can see more details here https://forum.gps-trace.com/d/586-ip-and-dns-server-formats-in-the-application