On APUG I read some time ago that Fotohuis RoVo's owner is in hospital due to a disease. Seems this is a long-term issue. Since it's a one-man business, it might be permanently.
Which is a very sad development for analog photography in The Netherlands, the man was the single most knowledgable authority on chemicals and developing. Even my preferred photostore is about to suffer from shortage in D76 Amaloco in the next few months, since RoVo was the main importer for chemicals in The Netherlands.