Unfortunately the video was only released in English-speaking territories on iTunes and Amazon. As explained earlier in this thread, that's due to the distributor's translation / subtitle requirements. As far as I know, there are no plans to subtitle the concert film and expand the release on the current platforms. I'm also not aware of any plans to make the video available directly from Neil's website or You Tube account.
But speaking of YouTube, the concert video is also available via Google Play (which I believe is a cousin to YouTube). When go to this link for the trailer I see an option to buy or rent the video:
That might be because I'm in the US, so I'm not sure if it will work in Spain, but I figured it's worth a shot.
Sorry that you're having difficulty.