Although the developers provide physical delivery for their applications, this game doesn't appear to be supported anymore which means that you won't have the possibility to buy it physically or digitally at all.
I've checked the page and used the available Search function to look for it, but it doesn't appear in the search results.
However, you can also request an official statement from the developers to see what is the status of the Reel Deal Slots Quest The Vampire Lord game: https://phantomefx.zendesk.com/hc/en-us
Note: Create an account and then post the issue through a ticket.
