We have been told it's a certificate problem....
Gent had a power cut yesterday, and now all the hotels of a certain owner can't process cards :(
Oops.
We got 2 replacements for our devices taxied to Brussels from Luxembourg yesterday to fix 2 that were broken here, but I doubt anyone else is that lucky.
We were lucky cos we were doing a migration at the time, and our provider (3C) thought that they had caused the issue I assume.
At least the replacements worked or that would be 1 more hotel broken.
Apparently I'm not allowed to reflash the broken devices myself for security reasons, which is a bit shit, as surely everything is cryptographically signed anyway isn't it??......... <tumbleweed>.......