Lol, oh the plague of the font faces xD You'd think they would make sure capital I's and lowercase L's couldn't be confused so easily, haha. I won't deny I thought your name was Ivan-dert as well.
(However, I think the partial reason in my case is that I tend to hang out on gamer forums. Quite a few guys there just assume everyone's a boy seeing "there are no girls on the internet" xD The reactions I get when they hear me talk online or I just say I'm actually female are hilarious at times)
Though now you have me curious. How would you pronounce your name then? Is there a specific way?