The WN carries on way past where the LN stalled out. While it has completed now, it was still ongoing at the time the third LN volume came out. I'd fallen off reading the fan translation even before it was licensed, and is got to chapter 149 which was by my recollection at least a couple of arcs...
ISTR it was the first digital-only series in the UK on some platform I forget (Vuze or something like that?) because even at the time ADV didn’t think it would sell well enough to justify the costs.
(it was Vizumi)
Yes. The SKUs are KBR3154 and KDVD3155 and the EANs have Viz Media Europe's prefix.
They confirmed they had it at May Comic Con 2014:
UKA: Manga Entertainment May 2014 MCM London Comic Con news round-up
They then confirmed at October Comic COn 2015 that they didn't:
UKA: Manga Entertainment...
Which volume? I wouldn't say I've dropped it exactly, but I rather lost interest around the loli vampire foot licking stuff, and so when Yen/Amazon cancelled all my pre-orders and raised prices I never bothered to re-order.