The Plugin Breaking Fronts Page CSS

Hello, the plugin is awesome but When I activate the plugin the CSS of the home page gets corrupted. I tried to remove all Plugin CSS but it changes nothing. Is it about JS or PHP? How can I solve this?

There is a CSS class in theme;

.rbc-content {
display: -webkit-flex; —> When I chance this to “display: block” one of the rows CSS is going to work correctly. Other row is changing too but not work correctly.<—
flex-flow: row wrap;
align-items: flex-start;
align-content: flex-start;
}

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