You can just type the private key somewhere, select it and copy the entire string, then go to mycelium and import it from the clipboard.
That's the problem I'm having. I can't find that option anywhere. Where can I import it?
Go to the Accounts tab and in the upper right hand corner, there should be a button with a key and a plus sign. Tap that and scroll down to the bottom of the window that opens. Hit the button for Advanced. From there you can scan the key (were you using another scanner before? That probably wouldn't have worked, but the one in the app will) or you can import it from the clipboard. If the button for import from clipboard is grayed out, that means you copied it incorrectly.