Hello Danar,
Thank you for your question.
Double check the conditions you have selected to implement over speeding scenario, this can be found in the link provided:
https://wiki.teltonika-gps.com/view/FMB140_Features_settings#Over_Speeding
Also note, that ignition has to be ON, and proper movement source selected.
Both issues seems like a case of incorrect configuration. Have you enabled over speeding scenario by setting its priority? Have you enabled speed in I/O section as well? This would explain multiple data you are getting.
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.
Best regards.