mycred_give error?

I’m using the mycred_give shortcode, but it seems to be adding twice as many points as it should. Here’s what’s on the page:

[mycred_give amount=5 log=”Bonus points for reading our special article” ref=”bonus_points”]
Your current balance is [mycred_my_balance]

Instead of adding 5 points, it’s adding 10 points when I refresh the page.

You can try it here:
https://bstlcl.com/congratulations/

The page I need help with: [log in to see the link]