Dear Nate & others,
Thanks very much for getting back to me on this!
I already received some useful feedback from somebody else (don't know if he wants to remain anonymous), directly via email. I sent him the badge; I am sharing his analysis with you:
Rene, the badge might be okay, but the website hosting it has an issue. I took a look at the badge data inside that image. It contains this URL:
Maybe there is a valid badge at that URL, but the problem is you must be a logged-in user on krachtigeleeromgeving.nl in order to view it. If you know anyone behind this website, you might want to let them know that hosted badges must be publicly accessible in order to be verified.
I guess this is in line with what you wrote below ('misconfigured'). I notified the badge issuer, I also forwarded your reply to them, and am waiting for their reply.
As soon as I know more I will let you know.
Best regards,
Rene