Currently, HBO offers three separate VOD services: Max, GO and Now. Large part of their content overlaps one another, therefore HBO made a decision to consolidate them into one. HBO Now and GO will be cancelled, and their content added to that of HBO Max. We do not know the date at which this will take place.
Speaking of not knowing, there is still no word on the european release of the HBO VOD; the platform is still available only in the US.