Facebook and Google have a rate limit of the # of times I can retrieve the shares for a certain website, therefore I can't retrieve all the articles at once. Try again in 1 hour (that's the cooldown time). I've found ways to bypass this, but that would cost money to set up and therefore I haven't fully implemented it yet. Depending on the popularity of the application I might expand it.
Send me an email to info[at]truetech.be or use the feedback form in the lower left corner. If you're having a bug, maybe include a video to show it so it's easier to solve!