Your character wasn't being ignored, everyone was under the impression that when Redwulfe said
Yurei looks for Spaces Access ID to add him in to his communication
that he did add you to the team's communication. So everyone that said @team afterwards was infact talking to you as well. Heck you had a character that addressed your character directly over comm, which implies that he thought you were connected to the team's communications.
He then turns to the new team member and sends the following message:welcome to the group. I'm Nexus: muscle. The group appointed me leader for the time being. It seems you came just in time. this sounds like a job where hackings gonna be a must
Also, with the update to the hacking houserule, the rolls that you did Larzarus aren't valid... something you might want to be aware of though, threading increases the rating of the CF by the successes, so a decrypt 2 + 4 successes = Decrypt 6, which is higher than your Resonance, which would cause physical fading.
Ok, how about this... since I doubt it was intentional for space to be ignored,, can we just say that when Yurei says "looks for Spaces Access ID to add hi in to his communication." he found your AccessID (2 complex actions to locate your hidden node, assuming it's hidden, plus a matrix perception simple action to get the Access ID. This is all assums he's looking for your physical commlink.) and included you in the communications from/to the group there by negating any ignoring that may have inadvertently happened?
Finally, I want to point out that assuming everyone is ignoring your character without a single player saying that their character is intentionally ignoring yours is a bit much. I'm under the impression that English isn't your primary language. The reason I mention it is that sometimes when people don't have the same primary language it can lead to more misunderstandings and perceived slights, so lets all make sure we clear up any possible misunderstandings in OOC, and give a chance for people to respond, before having characters take offense.