Did you create a child theme? or else your plugin is seriously talking over..
All the weaver content structure is gone and replaced by the plugin content structure.
As a result, none of Weaver content formatting option can apply, so you would need to check what formatting options your plugin offers, or inspect your page and create Custom CSS rules .
For example, the content appears to be inside a container with the ID #tribe-events-pg-template, so you can add a rule like below to Main Options > Fonts & Custom > CUstom CSS rule box.
But you should really check if you cant insert your plugin content with a shortcode in the actual content of a page, or if your plugin offers styling.
Custom CSS should be your last resort
#tribe-events-pg-template {padding:20px;}