Hi Simon,
Kindly share some more information. The error that you mentioned is Vendor specific not sentinel one. Kindly contact your vendor so that they can contact us. Also
1- Kindly check if you can see Features in problematic dongles.
2- Also share the Admin Control Center (ACC) version in http://localhost:1947/_int_/diag.html
3- Are you able to blink your dongle's led from ACC.
Regards,
Anubhav