I was about to explain what the position is with signatures, but I noticed that the signature you created is written in the form of a link, which would not have worked in any event. Unfortunately having clickable links attracts a huge number of spammers, as it's a great motivation for them to make spam posts, and for that reason we disallowed clickable links several years ago. Spammers stilll make a nuisance of themselves of course, but without clickable links in signatures the temptation is less for many of them, so it does give us some respite from the relentless spamming we have to put up with. Of course we're not saying that all signature links are spam, but sadly allowing the genuine ones also empowers the spammers.
I hope you can understand our position.