Since the maps were made smaller, four of the WWs are spawning at 50 squares out. Those are fine. But the other five are now in the grey area.
Almost no alliance wants to hold a WW in the grey, as it is exposed and close to every quad and alliance on the server.
You will probably have noticed nobody wants to touch them. Now imagine a scenario (which happens every server) where there are two main, decent, alliances in one quad. Suddenly one of them has no options to hold a WW. They still don't go grey - they're likely just to meta up, or mass delete.
I would suggest Travian rethink this. You made the maps smaller to encourage more skirmishes (it worked) but both this, and the smaller spawn range of artefacts, are wrecking your objective. People are taking central croppers in order to get the artes, defeating the purpose of spreading people out over the map space. IMO both of their location spawning need attention.
Another way to spread people out over the map is to have more decent croppers. Anyone who isn't experienced enough to know about the cp race, will end up with a rubbish cropper. But you've heard this before - it's merely gotten worse since the maps shrunk. You cut the size by 75%, so please for the love of dog increase the number of 50% oases on the server to compensate.