In the Medium article it mentioned the Deluxe Edition would come with 1000 Crayta Credits, but I upgraded and only seem to have the 500 from the Premium upgrade.
The Deluxe upgrade route doesn’t come with any Crayta Credits, it’s only buying the Deluxe Edition outright which comes with that bonus pack. Sorry about this - the blog was ambiguous in its wording and we’ve cleared that up now.
I think if you wanted a refund because of this, Stadia support is generally quite lenient so hopefully you’d be able to get one (unfortunately that side is out of our hands though).