Since trackers of different manufacturers and models work according to different protocols, it is difficult to say for sure whether your tracker corresponds to one of the protocols we support.
First of all please try to identify your tracker on id.wialon.net as one of the devices Coban, Xexun, 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.
Also when configuring your tracker you can try to indicate DNS server format instead of IP format (to see it, click the IP button next to the server value). You can read more information here https://forum.gps-trace.com/d/586-ip-and-dns-server-formats-in-the-application