Hi Genec,
I'm suprized of your answer because I also open a call with LG support last week and I didn't received a positive solution like you... The person told me that application (vTuner) was not a LG application, but a third-party application distributed on LG Smart... then no support is offered !!! It sure that I tried to have more answer from the LG support. I asked to talk with his supervisor (level 2) and I didn't have a good answer also ! He just told me that vTuner partnership is no more supported by LG and this application is no more available ! Then, I ask to be refunded for my Under warranty Equipment (no more than 5 months) and he didn't want.
I searched another answer on this problem. I open a case with vTuner company directly some days ago to understand what's happen withe their service, but I didn't receive any reply for the moment. If you go on the vTuner Website you can view that company have a partnership with Samsung, LG, Audi, Yamaha, Pioneer, etc... but nothing in a news section that could explain the situation of a temporary unavailable service or stopping their partnership.
For the moment, the situation is very strange... many people seems to have the same problem, but didn't get the same answer from LG support.