Step 1: Make sure you’re connected to chat
Step 2: Make sure the little circle in the top right of chat is green
Step 3: Try and get the acievement again by redoing the challenge or refreshing the page
Step 4: If that doesn’t work then take a screenshot and send an email to firstname.lastname@example.org with the screenshot included and ask nicely to get the badge/card. Don’t be impatient and don’t send a second email. If they don’t get back to you in a few days, then resend the email.