Jetpack twitter timeline doen't work

Hi, I like to have a twitter timeline on my website http://rondomtaal.nl, but this doesn’t work. I’ve created an widget on twitter, put the widget-id number in the right field. but it only shows my name and underneath ‘my tweets’. can you help me figure out what I did wrong? Thanks in advance, Karin

https://wordpress.org/plugins/jetpack/