You can try to manually add the scenario, click on the "Open Directory" option while selecting the mod, and drag it to your scenario folder. For me, it's at "C:\Program Files (x86)\Steam\steamapps\common\Age2HD\resources\_common\scenario" Hope this helps!

This is what appear on my workshop module, i'm suscribed but seems like the file it's not available, i tried to click ''scenario'' but was the same http://puu.sh/mKVLE/ae43fa1bc1.png

Look in the settings; there's a dropdown menu for "Game:" where you need to click "Scenario ...". The map should be there.

I downloaded this map but i can't find it on ''Custom map'' options, can you help me telling me what to do exactly? thanks in advance