Kapi made me a dank signature but when I put it in, It becomes a little black box with a x through it?

I've used the one with like http://imgur.com/esouvsm[img] And http://imgur.com/esouvsm[img] And http://imgur.com/esouvsm[img]

And

http://imgur.com/esouvsm Kapi made me a dank signature but when I put it in, It becomes a little black box with a x through it? I've used the one with like [img]http://imgur.com/esouvsm[img] And http://imgur.com/esouvsm