1. We did not test such plugins with our theme officially, so can not provide you with a solid response about this yet. Note that we don’t give guaranty for full theme compatibility with all 3-rd party plugins. 2. You can create a static block with the desired content and show it on the 404 page via shortcode. For example – http://prntscr.com/oqyhv5 http://prntscr.com/oqyhy6 http://prntscr.com/oqyi0v = http://prntscr.com/oqyi4e + http://prntscr.com/oqyi8p ( http://prntscr.com/oqyif0 http://prntscr.com/oqyiiy http://prntscr.com/oqyio2 ) https://xstore.helpscoutdocs.com/article/47-static-blocks
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