Please try to use all possible settings listed here https://forum.gps-trace.com/d/340-how-to-connect-trackers-of-types-gt06-gt06n-gt02-gt02a-tk110-and-etc
If it doesn’t help then please try to identify your tracker on id.wialon.net as one of the devices Xexun, Coban, Concox
If your tracker is determined, take a screenshot, write down the name of the model of the tracker and the identified ID (may coincide with the IMEI, may be part of it with zero or without).
After that, return to the application in the unit settings (unit menu - Settings - Common Settings), specify the determined model and ID. After that, configure the tracker on the defined server and port.
Regarding the server, you can also read more information here https://forum.gps-trace.com/d/586-ip-and-dns-server-formats-in-the-application
Also, please check that everything is fine with the SIM card or chip that you use with the tracker, that it has enough funds and that the data transfer limits are not exceeded. Also, please make sure that you have configured the APN on the tracker in accordance with the provider data.