Hi martin27,
That's weird, we have not had such a case yet.
That is probably an eLicenser message and could have to do with the fact that your key is getting old (13 years and quite some licenses on that key, I took the liberty to check).
My suggestion would be to try with a new key or, if you can, transfer some of the licenses to another key, to check.
Best,
Paul
Paul Kopf Product Manager VSL