Collectible Card Game Headquarters

I have been able to successfully connect to and be connected to with the lobbies, but like many others, the client (not the host) gets a connection interruption error. Some people are having a success with gameplay, but I haven't. Many people have posted questions in threads asking for a solution but they seem to be ignored. Could I get any kind of response to this error?

There isn't any solution. Forge network play is unstable, and if it doesn't work for you, then you'll have to be patient. Forge was never designed with network play in mind, we are only volunteers who only have so much free time to devote, and network play hasn't been a priority. There's one developer who started work recently on network play but his life is quite busy.