Using more than one Tabs/Accordians on same page
The way Plumberx Theme is coded, it creates problem if you use more than one Tabs, Accordian or toggle on same page.
The easiest way to fix is to use Native Visual Composer Elements for them.
From v2.25 They all default elements are styled as per the theme as well.
So please try using one of these 4 based on your requirements.
Sorry for the inconvenience caused, and As always, if you have any question Please contact me from here http://templatation.com/support/ .