Dear Toni,
Most often, this type of device is connected as Resiont TK110 and the syntax of SMS commands may also be suitable. So try using this SMS command to сhange password to default password (666666):
Recover,new password#
If this does not help, please send us a photo of the tracker, user manual, your login and screenshots of your device configuration to our email support@gps-trace.com, we will try to help you.