I have not been in touch with any instructors so no comments there.
There was a connection error with the server at the exam center and everyone was sent back and need to rebook for the exam. This can definitely be avoided should there be a back-up server.
Reactie NIBE-SVV:
We regret to read that. Did you make your exam already? If not please let us know via our Social Media channels, so we can check this for you.
Kind regards,
NIBE-SVV