Speakers do not show on each post

Hello,

I have the https://innovationtalks.gr/ with tusant secondline child.

At each single post, while tags are appear, speakers with links do not appear. You can check for example the https://innovationtalks.gr/podcast/105-o-giannis-o-michalis-kai-i-pythia-syzitoyn-gia-tin-exelixi-tis-technitis-noimosynis-kai-apantoyn-sto-erotima-ti-kerdizoyme-kai-ti-chanoyme/

Can you please help me on this ? Thank you

Michael