Hey, @JRami-1557!
This sounds like something you'll need to reach out to your reseller for--which may be T-Mobile or someone else. You should be able to find your reseller in MyGeotab under Support > Contact Information if you're unfamiliar with how to reach them.
If you're still having difficulty navigating this, feel free to hit me up directly (joy@telematics411.com); I'm a freelance Geotab consultant and happy to discuss and see if there's anything I can do to help. :)
Best,
Joy B