i cant get an istagram

I have tons of apps on my droid way better than instagram.also i had instaroid before instagram came out.couldnt post pics but i could comment on them etc. anyhow, i just want to know how do you search for users on instagram for android? once i go to “search” and i type in a username, nothing happens and there is no button at all to hit “search.” i can find people on my fb etc but i can not search for a username, i can go to the “Search instagram” page but that is as far as the search goes.anyone else having the same problem? I’ve included a screen cap of my issue. I have clicked everything on my screen to try to search.