I think that many of us are waste our time with Multiplayer feature of Construct 2.
I have read lots of comments from other developers and the answers of Ashley and I haven't seen just one answer with proper solution. I can conclude that using of Multiplayer object is not feasible since you can not release a multiplayer game working only in a LAN network.
I've struggled a lot with this Multiplayer feature and it only works properly in a LAN Network.
I would like to have only one reason regarding this feature to keep using my bought license of Construct2. I think that is not bad platform at all but it has serious restrictions and I don't know exactly if the cause comes from the Scirra Support or the product itself.
The developers need an urgent solution for this and please, don't attribute the problem to network configurations since we have tested many many different configurations and none of them works properly (except for LAN network).