If the E-Mail of your PC account is the same as your iOS account, your iOS account will have a communityname instead of a G#, which can be quiet confusing sometimes.
I don't know about iZone or iEra, but that's not true at all on Classic.
a two-page thread about someone pretending to be a known player from PC Graal or a part of a known guild from PC Graal as if this doesn't happen on (literally) a daily basis