Thank you for your question.
Please refer to our Wiki page for proper RFID reader connection and configuration. https://wiki.teltonika-gps.com/view/1-Wire_RFID_Reader
Also it is specified in the device description that a 125 Hz card should work. Please see if you can see the RFID number (iButton) display in I/O parameters section when you touch the RFID reader with the card.
If you have more questions please reach out to us via VIP Helpdesk or contact your sales manager/distributor. If you don't have any contacts with our Sales managers, please contact them on our official website https://teltonika-gps.com/ and click on the "Contact Us" button. When you will click, please fill the form and submit it.