I have to report this former seller @hellonwood40.
I purchased a first-model Vhikk, paid via PayPal, "relatives and friends," so yes, I'm the stupid one.
I paid for the product on April 2nd, and now he's not responding to emails.
This is the wonderful answer the scammer gave me:
"Open a dispute to get a refund!
Maybe it's too late for this talk but I'm deeply sorry :)"
perfect...