arimakidd Hi
The dynamic functionality of grid layout squaring to 12 columns isnt working although the same works fine with similar template on local install.
You may try this workaround for specific page :
1) By way of page class suffix functionality, Enter layout-width in page class suffix "Text field"
2) Thereafter, Try add this to custom.css file :
.layout-width .zen-container #midCol.zg-col.zg-col-6{width:65% !!important;}
Kindly ensure to clear your browser cache if changes dont reflect.