International charcters must be from a UTF8 encoded file to import properly. Various versions of Excel are not the best tool to ensure UTF8 encoding. Notepad++ is a free application that will allow you to open your .CSV file and convert it to UTF8. Then save your file and retry your import.
Visit http://notepad-plus-plus.org/ for more information.
3) CSS may hide your map. Similar to #2, your template's style may happen to have rules in it that hide your map. We can't provide detailed advice on that matter here, but you may contact your template developer or investigate using your browser's built-in Element Inspector to see the CSS affecting a given element.
If you have added a location, and it's not appearing on your locator (E.g. on the map or in the listing) there may be a few reasons why: