Unfortunately I have too less Experience with this Device yet.
In which constellation did you use Analog Input 1?
Normally to Trigger Alarm with +12V: Best is to use Digital Input (Like Panic Button etc.)
You can download the Log File of your Device with Teltonika Configurator if connected via Bluetooth or USB. Instruction:
https://wiki.teltonikagps.com/view/Recommendations_for_filling_a_query_description
For Downloading Log over GPRS you need a FOTA WEB Account(fm.teltomika.lt).
Contact your Sales Manager for creating one if you don´t have an account yet. Unfortunately it takes a while to get it.
The Log is a .dmp File. At least You could open a ticket or Mail Your Suggestion to Teltonika.
As far as I know you should download it directly after triggering the alarm (within 2-3 hours).
Last but not least: Send an e-mail with the description of your situation to info@teltonika.lt.
Regards