Best answer by Mohammed
Our SIM cards are compatible with mobile handsets and tablets only.
We have seen other people try the SIM cards in various devices like car systems and managed to get them to work, however, don't officially support these. I can see above you mentioned that you tested this in a phone and this worked fine, which would confirm this.
Apologies I couldn't provide a more favourable response here.
We'd recommend getting in touch with us to process a return.