Hello,
Thank you for your question.
We are really sorry for all the troubles and inconvenience you had with this situation. In this case we suggest to 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.
Also, you could ask about device installation on the Crowd forum. Please feel free to ask us here.
Again, sorry for any inconvenience.
Best regards
Teltonika Support