Feed not updating

Hello there,

I am having dificulty to make the plugin work in WordPress RSS Widget.

I have the WPRSS plugin installed and it work fine with the code, in one page (https://fluxodeestudo.com/fluxonews). In this case, all good.

But in custom RSS feed https://fluxodeestudo.com/wprss it is not updating. The inicial feed is on the widget, but it not update. I installed WP Control and seems ok.

The page I need help with: [log in to see the link]