Honestly, win this, then sue them back. This behavior should not be tolerated. The whole ad blocking wars are even more bizarre than the "Leistungsschutzrecht",

Honestly, win this, then sue them back. This behavior should not be tolerated. The whole ad blocking wars are even more bizarre than the "Leistungsschutzrecht", where publishers tried to force search engines (mostly Google) to pay for the fact that they show content from their websites (and as a result drive traffic to them!), which sounded very similar: Instead of simply telling Google not to index their openly available content (e.g. through robots.txt), they explicitly allowed it, but then tried to dictate how exactly Google should use it in order to maximize their profits. Seriously, if you don't want your content to be freely downloaded, viewed and processed, simply hide it behind a paywall or invent your own proprietary format, and leave the open Internet alone.