Board Thread:Tapped Out Help/@comment-108.0.12.161-20141118051111

I only recently had any experience with visiting other players aside from the NPC Other Springfield town, since I started playing near the end of the CoC event and didn't have anyone on my friends list until the Halloween event had already started, when the only thing you could do was squish aliens. Now that there are no events going on, I've noticed for the past few days, sometimes when I visit a friend town, there's nothing I can tap on. Does anyone know what causes this to happen? Also, is there anything I should be doing to prevent it from happening to others when they visit my town? 