This has now happened twice to the Admin account on http://www.geekandjock.com
There is one badge that has triggered a repeat award that has fired off 50+ of the same achievement TWICE, via Credly.
I've doubled checked the setting per below and seems to be fine.
As already noted in a previous unanswered support ticket, the Admin account also seems to be credited with double award achievements for any badge earned too.
Any ideas why this is happening?