Reading of Book after Purchase not possible

[StefanoD]

Hi,
I wrote you and didn't get a response, yet.
I purchased your Black Hat Rust Book via Google Pay. But when I want to start read your book, I get again redirected to the payment side, despite the fact, I’m logged in.
I was actually expecting a PDF, instead of relying on a functional website! You, didn’t mention, that it can’t be downloaded!
Please send me either a PDF or give me my money back.