[split] EVA-y as Latin "-us" etc.

[ReneZ]

It is not Kircher, it is the dozens of wise men before him.

Did Emperor Rudolph II not have money to pay for the translation of a book he was interested in?

The use of medieval abbr. and the ability to read them ended soon after 1500, the printers changed their habits and did not use them anymore. That meant that contemporary scholars started to publish heavy volumes explaining them, they are no use in solving the VMs., I have tried.

We don't know if Rudolf owned the ms., I distrust the story because it  is exactly the story someone in the 17th  c. would invent if he was  trying to make a profit. It is like today when you try to sell a piss pot and tell people it was owned by siome rock star

There is of course a complete lack of evidence that anyone ever, in any era, could read the Voynich MS.
We may assume that the person or people who wrote it could, but that's all.

With respect to the piss pot, if the nanny of said rock star had actually written her name on it, you'd have a different story.