Twitter not working

Hello,

Great plugin! Everything is working just fine, but when i try to add a twitter search, no posts seem to be rendered in the designated category. I filled out the twitter search, i.e. @open_vld (and when i verify, he finds the account), in source text i leave it as it is (From Twitter). When push the button run now, no posts appear in my category.

What could be the problem? Please advice!
Thank you!

Tom.

https://www.ads-software.com/extend/plugins/dw-social-feed/