(A) These examples require Bootstrap 3.X for correct grid system, text, buttons styles, etc. You might need to customize a code if you use other or own CSS framework.
(B) The weather widgets especially are just a starting templates and are needed a modification for a production use.
(C) Using these examples within WordPress may require theme files customization or using a page builder (composer) at your own. See on them as a starting point.
The support comes with any LiviIcons Evolution plugin does not include any help with these examples.