Posted: Sun Aug 26, 2018 8:37am
I got my digital tacho card from an office of La Dirección General de Obras Públicas, Transporte y Movilidad in Alicante, by the train station. (This is a different organisation to Tráfico)
Below is a link to the application procedure. I would think you need to select "Primera emisión" if it's your first card in Spain
http://www.habitatge.gva.es/es/web/transportes/tacografo-digit-tran/documentacion-para-solicitar-las-tarjetas
It was six years ago when I did mine, but I do remember that the staff were helpful. If they haven't moved in the last 6 years, the office is in Avenida Aguilera, just off the roundabout by the train station. This photo shows it.
If I can help any more, send me a pm
Geoff.