Counter is on, value=1. Country was not defined and I set it now. Would that matter ?
Still there is no update. I tried manual update for a user but still the total balance is the same as he started.
I solved the problem by modufing the \holiday\card.php file.
I turned the line: $newSolde = $soldeActuel - ($nbopenedday * $object->getConfCP(‘nbHolidayDeducted’));
into: $newSolde = $soldeActuel - $nbopenedday;