I'm trying to trace bitmap on a signature and nothing is happening at all! I imported a pdf of the signature, clicked resize document to selection under document properties, then went to work trying to trace bitmap. I selected

(I think) the signature, it just selects a rectangle shape for now of course, at the bottom of the screen it displays "Group 1 of object in layer xyz" (I think this is part of the problem, shouldn't it indicate something else if its actually selected). I went for single scan, brightness cutoff, thresholds at 880 and 970, colors 2. When I click ok literally nothing happens. At the bottom of the screen instead of "group 1 etc." it just says "select an image to trace". THE IMAGE IS ALREADY SELECTED. I have no idea what I'm doing wrong and I'm so frustrated. I've tried changing everything, single scan, multiple scan, reimporting the pdf, not resizing it. I don't know what to do but I need to figure it out asap, please help!
Thanks,
L