I don’t think that interpretation is correct, we discussed it in Sodium content missing on label . They take the Sodium content, and from the Sodium they calculate the salt, not the other way round. I agree however, that Huel should directly state the Sodium content on the label too.
No. The amounts per 2000kcal are the same for both vanilla and U/U, it is just the amounts per 100g.
You can notice that the amounts of everything are different between Vanilla and U/U per 100g. That’s because Vanilla Huel includes the vanilla flavor system, which has a mass and therefore changes the amounts per 100g, and U/U does not contain this flavoring system. However both vanilla and U/U contain the same amounts of ingredients per 2000kcal (or per day, whichever way you like to interpret it).