I'm a little confused because I do not see the =(e)= tag on your profile just yet. I saw your application got approved, but once it's been approved, you should see an e tag under your name. Not sure if there's an issue or just some sort of time delay, but you may want to ask PSC leadership to follow up on your application to make sure it's been fully approved so you can wear the =(e)= tag, just to be safe.
And what C.C. said is correct, however, Minecraft is a unique case where the account you create to play is also your user/screen name. In the eGO Minecraft servers, we have admins and plugins that can denote your =(e)= tag, but obviously it won't be seen in other servers. Until Minecraft allows people to change their user names, there's really no way to edit your name to show the =(e)= tag unless you make it upon account creation. Hope that helps.