On the 21st I bought a 5080 from that seller "Wundshop", today is the 24th and there is still no progress on the status of the package (nor will there be any more progress). I contacted Amazon for them to investigate or do something, but they told me to wait until the 28th (which is the last day they have for me to receive the package).

Don't they supposedly have to have the item in Amazon's warehouse to sell it?

The vendor disappeared a few hours after my comment and now his Amazon store doesn't exist anymore, replaced by another vendor with no sales but normal prices :) . Even if the seller was written as a german company "Wundshop" it was only registered on Amazon Spain