Code For Stumble Upon

At my main site Joetaxpayer, I use the code;

https://www.stumbleupon.com/submit?url=<?php the_permalink(); ?>&title=<?php the_title(); ?>

for the stumble link. It creates a submit request at stumbleupon.

Now, when I try to duplicate this, at Rothmania, the social widget will not save the code, it truncates it.

Is there a suggest code to use for Stumble Upon? Ideally, it would ‘submit’ the page being read just then.

https://www.ads-software.com/extend/plugins/social-media-widget/