top menu items can't be removed

I'm trying to remove the remove the Backblaze icon from my top menu bar. I've thrown away and cancelled Backblaze. Clicking on command and then trying to pull out the icon doesn't work. Clicking only launches a backblaze menu. Moving apple apps from the top menu works fine, but I've noticed that several other user applications won't budge when I try to move/remove them. While this is not a serious operational problem, it's a point of clutter and the fact that it won't move is a control issue for me. thanks!