Hello, AivarsM ,
Login to the Ruhavik application is carried out using your username and password and is not associated with phone numbers at the moment, perhaps you mean sending SMS commands to the tracker?
If so, then usually trackers have settings for entering restricted numbers to which the tracker will respond.
Contact the manufacturer or dealer of your equipment to find out how to make this setting.
Also, often such information is in the manuals for the devices.
