Good advice - I gave it a shot, but sadly, no results. I tried to upload some pictures, but I couldn't find how, so I'll have to describe them here:
When I load the game, it starts on Amiri, with the Bandit card in the top left. She has the "Recharge 1" text and a cyan border around her cards. If I click Kyra, she also has the "Recharge 1" text (as all the characters do, in fact!), but no cyan border around any of her cards, and neither clicking nor dragging will recharge them.
After Amiri recharges a card (I have typically selected a Crowbar, but since I've also tried it with all the other cards in her hand it doesn't matter) she has a bright "undo" button on the left and a greyed-out "proceed" button on the right. Touching the undo button takes her back to the "Recharge 1" screen from before. Touching the proceed button does nothing.
After Amiri recharges a card, Kyra has a bright "undo" button on the left and an equally bright "proceed" button on the right. (None of the other four characters have a bright proceed button; they're all greyed out.) Neither touching the undo button nor the proceed button does anything.