I keep having trouble connecting via Kies. I have a Samsung Galaxy Express.
Welcome to the forums, Nancyandash.
Kies is notorious for being a bit of a pain, if I do say so myself.
Are you using Kies Air, as provided in Play Store and with an icon link in your app drawer?
Here are the two versions of that device (the areas here at AF where users of the Express interact, ask questions and provide info):
Samsung Galaxy Express - Android Forums
Samsung Galaxy Express (International) - Android Forums
Separate names with a comma.